Chemistry: Most Popular Articles
These articles are the most popular over the last month.
Science Quiz - Test Your General Science Knowledge
Test your general science knowledge with this fun multiple choice quiz.
Test your general science knowledge with this fun multiple choice quiz.
Baking Soda & Baking Powder
Difference Between Baking Powder and Baking Soda - Cooking Substitutions
Difference Between Baking Powder and Baking Soda - Cooking Substitutions
Crystal Meth Facts
Learn what crystal meth is, why people take crystal meth, how it's made, and what risks are associated with using methamphetamine.
Learn what crystal meth is, why people take crystal meth, how it's made, and what risks are associated with using methamphetamine.
Printable Periodic Table
Download or print these periodic tables to help work chemistry problems or to predict properties of the elements.
Download or print these periodic tables to help work chemistry problems or to predict properties of the elements.
Baking Substitutions
Baking powder and baking soda both are leavening agents that help baked goods to rise. They are not the same chemical, but you can substitute one for another in recipes. Here's how.
Baking powder and baking soda both are leavening agents that help baked goods to rise. They are not the same chemical, but you can substitute one for another in recipes. Here's how.
Balancing Chemical Equations
Use these step by step instructions to write and balance chemical equations.
Use these step by step instructions to write and balance chemical equations.
Can You Drink Too Much Water?
Is it really possible to drink to much water? Learn about water intoxication and hyponatremia.
Is it really possible to drink to much water? Learn about water intoxication and hyponatremia.
How To Build a Baking Soda Vol
The chemical volcano is a classic sciece project. Baking soda and vinegar combine to produce carbon dioxide bubbly lava, which you can color to resemble a real volcanic eruption. See how to make your own baking soda volcano.
The chemical volcano is a classic sciece project. Baking soda and vinegar combine to produce carbon dioxide bubbly lava, which you can color to resemble a real volcanic eruption. See how to make your own baking soda volcano.
Natural Mosquito Repellents
Learn about natural ways to repel mosquitoes and develop strategies to reduce your exposure to them.
Learn about natural ways to repel mosquitoes and develop strategies to reduce your exposure to them.
Periodic Table - Interactive Periodic Table of the Elements
This is an interactive periodic table of the elements or periodic chart of the chemical elements. Click on an element symbol on the periodic table to get detailed information for each element.
This is an interactive periodic table of the elements or periodic chart of the chemical elements. Click on an element symbol on the periodic table to get detailed information for each element.
Which Element Are You? - Element Personality Quiz
Which chemical element are you? Technically speaking, you mostly consist of carbon, hydrogen, and oxygen, but which element best represents your personality? Take this fun multiple choice quiz to find out.
Which chemical element are you? Technically speaking, you mostly consist of carbon, hydrogen, and oxygen, but which element best represents your personality? Take this fun multiple choice quiz to find out.
Bouncing Polymer Ball
Use chemistry to make a bouncing polymer ball, then alter the procedure to see the effect the changes have on the charactertistics of the bouncing ball.
Use chemistry to make a bouncing polymer ball, then alter the procedure to see the effect the changes have on the charactertistics of the bouncing ball.
Calculate Concentration
Calculate the concentration of chemical solutions in percent composition by mass, volume percent, molarity, molality, and normality. Make dilutions by adding the correct volume of solvent to make a new solution.
Calculate the concentration of chemical solutions in percent composition by mass, volume percent, molarity, molality, and normality. Make dilutions by adding the correct volume of solvent to make a new solution.
20 Chemistry Questions Quiz - 20 Chemistry Facts and Questions
Take a multiple choice quiz to test yourself about general knowledge in chemistry.
Take a multiple choice quiz to test yourself about general knowledge in chemistry.
Basics of Acids and Bases Quiz - Test Your Chemistry Knowledge
Basics of Acids and Bases Quiz - Test Your Chemistry Knowledge
Basics of Acids and Bases Quiz - Test Your Chemistry Knowledge
Atom Basics Quiz - Test Your Chemistry Knowledge
Atom Basics Quiz - Test Your Chemistry Knowledge: structure quiz chemistry knowledge model of the atom question quiz science fundamentals
Atom Basics Quiz - Test Your Chemistry Knowledge: structure quiz chemistry knowledge model of the atom question quiz science fundamentals
Mood Ring Colors and Meanings
This chart shows the colors of the typical 1970s mood ring and the meanings associated with the mood ring colors.
This chart shows the colors of the typical 1970s mood ring and the meanings associated with the mood ring colors.
Elephant Toothpaste Chemistry
The elephant toothpaste chemistry demonstration is a dramatic demo which produces copious amounts of steaming foam that sort of looks like the toothpaste an elephant might use. Here's how to set up this demonstration and a look at the reaction behind it.
The elephant toothpaste chemistry demonstration is a dramatic demo which produces copious amounts of steaming foam that sort of looks like the toothpaste an elephant might use. Here's how to set up this demonstration and a look at the reaction behind it.
What Is Borax?
Borax is a common household and commercial chemical. Here's a look at what borax is, some facts about borax and how you can get borax.
Borax is a common household and commercial chemical. Here's a look at what borax is, some facts about borax and how you can get borax.
Types of Chemical Reactions
Learn about the different types of chemical reactions and get examples of the reaction types.
Learn about the different types of chemical reactions and get examples of the reaction types.
Strong Acids
These are the strong acids. There aren't very many strong acids, so you might want to commit the list of strong acids to memory.
These are the strong acids. There aren't very many strong acids, so you might want to commit the list of strong acids to memory.
Chemical & Physical Changes
Find out what chemical and physical changes are, get examples, and learn how to tell them apart.
Find out what chemical and physical changes are, get examples, and learn how to tell them apart.
Boiling Point of Water
At what temperature does water boil? What determines the boiling point of water? Here's the answer to this common question.
At what temperature does water boil? What determines the boiling point of water? Here's the answer to this common question.
Endothermic and Exothermic Rea
Learn about endothermic and exothermic chemical reactions and get instructions to perform your own hot and cold chemistry.
Learn about endothermic and exothermic chemical reactions and get instructions to perform your own hot and cold chemistry.
pH Calculations
Review how to calculate pH and what pH means with respect to hydrogen ion concentration, acids, and bases.
Review how to calculate pH and what pH means with respect to hydrogen ion concentration, acids, and bases.
How to Write a Lab Report
Lab reports are an essential part of all laboratory courses and usually a significant part of your grade. If your instructor gives you an outline for how to write a lab report, use that. Here's a format for a lab report you can use if you aren't sure what to write or need an explanation of what to include in the different parts of the report.
Lab reports are an essential part of all laboratory courses and usually a significant part of your grade. If your instructor gives you an outline for how to write a lab report, use that. Here's a format for a lab report you can use if you aren't sure what to write or need an explanation of what to include in the different parts of the report.
How to Make a Smoke Bomb
Learn how to make a smoke bomb. This is the list of materials required for making your own smoke bomb.
Learn how to make a smoke bomb. This is the list of materials required for making your own smoke bomb.
How to Calculate Molarity
Molarity is a unit of concentration measuring the number of moles of a solute per liter of solution. The strategy to solving molarity problems is fairly simple. This outlines a straightforward method to calculate molarity of a solution.
Molarity is a unit of concentration measuring the number of moles of a solute per liter of solution. The strategy to solving molarity problems is fairly simple. This outlines a straightforward method to calculate molarity of a solution.
STP in Chemistry
Here's an explanation of what STP is in chemistry and why it is useful, particularly when dealing with gases.
Here's an explanation of what STP is in chemistry and why it is useful, particularly when dealing with gases.
Ionic & Covalent Bonds
Learn to distinguish between ionic and covalent bonds, and determine whether a bond will be polar or nonpolar.
Learn to distinguish between ionic and covalent bonds, and determine whether a bond will be polar or nonpolar.
Remove Fluoride from Water
Learn how to remove fluoride from drinking water.
Learn how to remove fluoride from drinking water.
Remove Ball Point Pen Ink
Ball point pen ink is not a something that you can usually remove with simple soap and water, but there is an easy and inexpensive way to remove pen ink from surfaces or clothing.
Ball point pen ink is not a something that you can usually remove with simple soap and water, but there is an easy and inexpensive way to remove pen ink from surfaces or clothing.
Isotopes Definition
Isotopes definition, as used in chemistry, chemical engineering, and physics.
Isotopes definition, as used in chemistry, chemical engineering, and physics.
Marijuana Facts
Learn what marijuana and THC are, why people use marijuana, where it comes from, and what risks are associated with using marijuana.
Learn what marijuana and THC are, why people use marijuana, where it comes from, and what risks are associated with using marijuana.
Element List
Here's a list of chemical elements ordered by increasing atomic number. The names and element symbols are provided.
Here's a list of chemical elements ordered by increasing atomic number. The names and element symbols are provided.
Make Ice Cream in a Baggie
Make Ice Cream in a Baggie - Freezing Point Depression and Colligative Properties
Make Ice Cream in a Baggie - Freezing Point Depression and Colligative Properties
What Is Chemical Engineering?
Are you confused about how chemical engineering differs from pure chemistry or other types of engineering? Here's an explanation of what chemical engineering is and what chemical engineers do.
Are you confused about how chemical engineering differs from pure chemistry or other types of engineering? Here's an explanation of what chemical engineering is and what chemical engineers do.
Difference Between Independent and Dependent Variables
The difference between independent and dependent variables in a scientific experiment is which variable is being measured.
The difference between independent and dependent variables in a scientific experiment is which variable is being measured.
Oxidation Number Rules
Learn how to assign oxidation numbers to keep track of the distribution of electrons during a chemical reaction.
Learn how to assign oxidation numbers to keep track of the distribution of electrons during a chemical reaction.
Natural Mosquito Repellent
It's easy to make your own natural mosquito repellent. You can control exactly what goes into the project so you won't need to worry about any unwanted chemicals.
It's easy to make your own natural mosquito repellent. You can control exactly what goes into the project so you won't need to worry about any unwanted chemicals.
Can You Drink Distilled Water?
Distillation is one method of water purification. Is distilled water safe to drink or as good for you as other types of water? The answer depends on a few different factors.
Distillation is one method of water purification. Is distilled water safe to drink or as good for you as other types of water? The answer depends on a few different factors.
Heterogeneous vs. Homogeneous
Heterogeneous and homogeneous refer to mixtures of materials in chemistry. The difference between heterogeneous and homogeneous mixtures is the degree at which the materials are mixed together.
Heterogeneous and homogeneous refer to mixtures of materials in chemistry. The difference between heterogeneous and homogeneous mixtures is the degree at which the materials are mixed together.
Element Picture Quiz - Test Your Recognition of the Elements
Can you recognize the elements when you see them? Here's a quiz that tests your ability to identify an element based on its appearance.
Can you recognize the elements when you see them? Here's a quiz that tests your ability to identify an element based on its appearance.
Natural Insect Repellent
You can make natural insect repellent yourself. The insect repellent is safe and effective, plus it costs much less to make it than to buy it.
You can make natural insect repellent yourself. The insect repellent is safe and effective, plus it costs much less to make it than to buy it.
How to Calculate Theoretical Yield
Before performing chemical reactions, it is helpful to know how much product will be produced with given quantities of reactants. This is known as the theoretical yield. It is also helpful to predict how much reagent you will need in order to produce a specific amount of products. This is a strategy to use when calculating theoretical yield of a chemical reaction.
Before performing chemical reactions, it is helpful to know how much product will be produced with given quantities of reactants. This is known as the theoretical yield. It is also helpful to predict how much reagent you will need in order to produce a specific amount of products. This is a strategy to use when calculating theoretical yield of a chemical reaction.
How To Define Anode and Cathode
Here is how to define anode and cathode and how to remember which is which.
Here is how to define anode and cathode and how to remember which is which.
Modeling Clay Recipes
There are several ways you can make homemade clay for modeling, making ornaments, and for other projects and crafts. Here are several clay recipes, including a refrigerator clay, a clay you bake to harden, one you coat for a glossy finish, and one that works up and stays pliable much like store-bought modeling clay.
There are several ways you can make homemade clay for modeling, making ornaments, and for other projects and crafts. Here are several clay recipes, including a refrigerator clay, a clay you bake to harden, one you coat for a glossy finish, and one that works up and stays pliable much like store-bought modeling clay.
10 Chemical Change Examples
Chemical changes involve chemical reactions and the creation of new products. This is a list of 10 examples of chemical changes.
Chemical changes involve chemical reactions and the creation of new products. This is a list of 10 examples of chemical changes.
Strong Bases
Strong bases are bases which completely dissociate in water. Here is a list of the most common strong bases.
Strong bases are bases which completely dissociate in water. Here is a list of the most common strong bases.
Formulas of Acids & Bases
Here are the names and formulas of some of the common acids and bases.
Here are the names and formulas of some of the common acids and bases.
Make Slime
This is a recipe for homemade slime.
This is a recipe for homemade slime.
Acid-Base Indicators
Learn about what an acid-base indicator is and choose an acid-base indicator from this comprehensive table of acid-base indicators, based on pH range or color change.
Learn about what an acid-base indicator is and choose an acid-base indicator from this comprehensive table of acid-base indicators, based on pH range or color change.
Factors that Affect the Chemic
Several factors affect the rate at which chemical reactions proceed. Understanding these factors will help you predict the direction and speed of a chemical reaction.
Several factors affect the rate at which chemical reactions proceed. Understanding these factors will help you predict the direction and speed of a chemical reaction.
Solution Definition
Solution definition, as used in chemistry, chemical engineering, and physics.
Solution definition, as used in chemistry, chemical engineering, and physics.
Diatomic Elements
There are seven elements that form diatomic molecules. This is a list of the seven diatomic elements.
There are seven elements that form diatomic molecules. This is a list of the seven diatomic elements.
Slime Recipe
Get step-by-step instructions for making classic slime.
Get step-by-step instructions for making classic slime.
Titration Example Problem
Here is an acids and bases example problem involving titration. A base of known concentration is used to neutralize an unknown concentration of an acid.
Here is an acids and bases example problem involving titration. A base of known concentration is used to neutralize an unknown concentration of an acid.
Mixing Bleach and Ammonia
Mixing bleach and ammonia is extremely dangerous, since toxic vapors will be produced. The primary toxic chemical formed by the reaction is chloramine vapor, with a potential for hydrazine formation. Here's a look at the chemical reactions involved in mixing bleach and ammonia, as well as some first aid advice if you accidentally become exposed to a bleach and ammonia mixture.
Mixing bleach and ammonia is extremely dangerous, since toxic vapors will be produced. The primary toxic chemical formed by the reaction is chloramine vapor, with a potential for hydrazine formation. Here's a look at the chemical reactions involved in mixing bleach and ammonia, as well as some first aid advice if you accidentally become exposed to a bleach and ammonia mixture.
Element Symbols
Learn the one and two letter symbols for the chemical elements.
Learn the one and two letter symbols for the chemical elements.
5th Grade Science Projects
Get ideas for 5th grade science fair projects. These are experiments and topics suitable for upper elementary school level science fair projects.
Get ideas for 5th grade science fair projects. These are experiments and topics suitable for upper elementary school level science fair projects.
6th Grade Science Quiz - Test Your 6th Grade General Science Knowledge
Test your 6th grade general science knowledge with this fun multiple choice quiz.
Test your 6th grade general science knowledge with this fun multiple choice quiz.
Anabolic Steroids
Learn what anabolic steroids are, how they can enhance athletic performance, and what risks are associated with using performance enhancing drugs.
Learn what anabolic steroids are, how they can enhance athletic performance, and what risks are associated with using performance enhancing drugs.
Glow in the Dark Mountain Dew
All it takes is a few easily-obtained materials to turn a bottle of Mountain Dew into a glow in the dark bottle of Mountain Dew. You can't drink it, but that doesn't detract from the fun of making the bottle glow.
All it takes is a few easily-obtained materials to turn a bottle of Mountain Dew into a glow in the dark bottle of Mountain Dew. You can't drink it, but that doesn't detract from the fun of making the bottle glow.
Crack Cocaine Facts
Learn what crack cocaine is, why people take crack, how it's made, and what risks are associated with using crack cocaine.
Learn what crack cocaine is, why people take crack, how it's made, and what risks are associated with using crack cocaine.
Red Cabbage pH Indicator
Make your own pH indicator solution! Red cabbage juice contains a natural pH indicator that changes colors according to the acidity of the solution. Red cabbage juice indicator is easy to make, exhibits a wide range of colors, and can be used to make your own pH paper strips.
Make your own pH indicator solution! Red cabbage juice contains a natural pH indicator that changes colors according to the acidity of the solution. Red cabbage juice indicator is easy to make, exhibits a wide range of colors, and can be used to make your own pH paper strips.
Metal Properties
Most of the chemical elements are metals of one variety or another. Learn about some of the properties common to this large element group.
Most of the chemical elements are metals of one variety or another. Learn about some of the properties common to this large element group.
Calculate the Empirical and Molecular Formula
The empirical formula of a chemical compound is a representation of the simplest whole number ratio between the elements comprising the compound. The molecular formula is the representation of the actual whole number ratio between the elements of the compound. This step by step tutorial shows how to calculate the empirical and molecular formulas for a compound.
The empirical formula of a chemical compound is a representation of the simplest whole number ratio between the elements comprising the compound. The molecular formula is the representation of the actual whole number ratio between the elements of the compound. This step by step tutorial shows how to calculate the empirical and molecular formulas for a compound.
Acids and Bases Terms
Understanding acids and bases is important for grasping chemistry concepts. Here's an introduction to acids and bases, with definitions for key acid and base terms.
Understanding acids and bases is important for grasping chemistry concepts. Here's an introduction to acids and bases, with definitions for key acid and base terms.
Molecular - Empirical Formula
Here is a look at what the molecular formula and empirical formula are and steps for finding the molecular formula and empirical formula.
Here is a look at what the molecular formula and empirical formula are and steps for finding the molecular formula and empirical formula.
Top Chemistry Projects You Can
Don't worry if you don't have a chemistry lab. These projects use materials you can find around the house.
Don't worry if you don't have a chemistry lab. These projects use materials you can find around the house.
Standard Deviation
Standard deviation is an important calculation for math and sciences, particularly for lab reports. Here are step by step instructions for calculating standard deviation by hand.
Standard deviation is an important calculation for math and sciences, particularly for lab reports. Here are step by step instructions for calculating standard deviation by hand.
Physical & Chemical Change
Here are some examples of physical changes and chemical changes, along with an explanation of how you can tell physical and chemical changes apart.
Here are some examples of physical changes and chemical changes, along with an explanation of how you can tell physical and chemical changes apart.
How To Grow Sugar Crystals - M
These are step by step instructions for growing your own sugar crystals or rock candy.
These are step by step instructions for growing your own sugar crystals or rock candy.
Law of Conservation of Mass
Law of Conservation of Mass definition, as used in chemistry, chemical engineering, and physics.
Law of Conservation of Mass definition, as used in chemistry, chemical engineering, and physics.
Electrochemical Cells - Galvanic and Electrolytic Cells
Electrochemical Cells - Galvanic and Electrolytic Cells - Batteries
Electrochemical Cells - Galvanic and Electrolytic Cells - Batteries
Scientific Hypothesis Examples
Here are examples of a scientific hypothesis.
Here are examples of a scientific hypothesis.
Chemical Bonds
Learn about the different types of chemical bonds and the forces that affect the way electrons are shared.
Learn about the different types of chemical bonds and the forces that affect the way electrons are shared.
Gemstone List
This alphabetical list of gemstones includes the mineral names of the gemstones as well as links to photos of the gems.
This alphabetical list of gemstones includes the mineral names of the gemstones as well as links to photos of the gems.
How Brain Freeze Works
If you've ever experienced a sudden stabbing pain in your forehead when eating ice cream or enjoying a cool drink then you know what brain freeze is. Do you know what causes brain freeze or how you can stop the pain?
If you've ever experienced a sudden stabbing pain in your forehead when eating ice cream or enjoying a cool drink then you know what brain freeze is. Do you know what causes brain freeze or how you can stop the pain?
How To Color Fire
Learn how to color fire using these fun and easy instructions.
Learn how to color fire using these fun and easy instructions.
How to Balance Redox Reactions
Step-by-step instructions for balancing redox reactions for conservation of mass and charge in electrochemistry.
Step-by-step instructions for balancing redox reactions for conservation of mass and charge in electrochemistry.
Elements in the Human Body
Elements in the Human Body
Elements in the Human Body
A Chemistry Glossary Terms
Use this chemistry glossary to look up the definitions of chemistry terms beginning with the letter A.
Use this chemistry glossary to look up the definitions of chemistry terms beginning with the letter A.
Oxidation Reduction Reactions
This is an introduction to oxidation-reduction reactions, also known as redox reactions. Learn what redox reactions are, get examples of oxidation-reduction reactions, and find out why redox reactions are important.
This is an introduction to oxidation-reduction reactions, also known as redox reactions. Learn what redox reactions are, get examples of oxidation-reduction reactions, and find out why redox reactions are important.
Chemistry Basics
Start learning chemistry with the basics. Learn what chemistry is, what chemists do, and why it's important to study chemistry.
Start learning chemistry with the basics. Learn what chemistry is, what chemists do, and why it's important to study chemistry.
How to Calculate Mass Percent
Mass percent composition of a molecule shows the amount each element in a molecule contributes to the total molecular mass. This step by step tutorial will show the method to determine the mass percent composition of a molecule.
Mass percent composition of a molecule shows the amount each element in a molecule contributes to the total molecular mass. This step by step tutorial will show the method to determine the mass percent composition of a molecule.
pH of Household Products Quiz
pH of Household Products Quiz: multiple choice questions chemistry quiz metal quiz hydrogen ion chemistry articles
pH of Household Products Quiz: multiple choice questions chemistry quiz metal quiz hydrogen ion chemistry articles
Metals List
Most elements are metals. This group includes the alkali metals, alkaline earth metals, transition metals, basic metals, and rare earth elements.
Most elements are metals. This group includes the alkali metals, alkaline earth metals, transition metals, basic metals, and rare earth elements.
Combustion Reactions
This is an overview of combustion reactions, including what they are, the general format for the reaction, and examples of combustion reactions.
This is an overview of combustion reactions, including what they are, the general format for the reaction, and examples of combustion reactions.
Balancing Equations Practice Quiz
Practice balancing chemical equations with this multiple choice quiz.
Practice balancing chemical equations with this multiple choice quiz.
Periodic Table Study Guide
Learn about the periodic table of the elements. Find out about the history of the periodic table, how the elements are organized, and how to use the periodic table to predict the behavior of unfamiliar elements.
Learn about the periodic table of the elements. Find out about the history of the periodic table, how the elements are organized, and how to use the periodic table to predict the behavior of unfamiliar elements.
Strength of Acids and Bases
Learn about strong and weak acids and bases. Get definitions and examples of each type.
Learn about strong and weak acids and bases. Get definitions and examples of each type.
Metals and Nonmetals
Elements may be classified as either metals or nonmetals, based on their properties. Here's a look at the differences between the metals and nonmetals.
Elements may be classified as either metals or nonmetals, based on their properties. Here's a look at the differences between the metals and nonmetals.
Common Polyatomic Ions
This is a list of some of the most common polyatomic ions. It is worth committing the polyatomic ions to memory, including their molecular formulas and ionic charge.
This is a list of some of the most common polyatomic ions. It is worth committing the polyatomic ions to memory, including their molecular formulas and ionic charge.
Area and Volume Formulas
Here are the surface area and volume math formulas for a rectangular solid.
Here are the surface area and volume math formulas for a rectangular solid.
Gas Constant (R) Definition
Gas Constant (R) definition, as used in chemistry, chemical engineering, and physics.
Gas Constant (R) definition, as used in chemistry, chemical engineering, and physics.
Elementary Science Projects
Find elementary school science fair project ideas suitable for the kindergarten through fifth grade level.
Find elementary school science fair project ideas suitable for the kindergarten through fifth grade level.
Functional Groups - Organic Chemistry
Functional groups are collections of atoms in a molecule that participate in characteristic reactions. If you are taking organic chemistry, it's a good idea to memorize important functional groups or at least bookmark a past listing functional groups so that you can refer to it.
Functional groups are collections of atoms in a molecule that participate in characteristic reactions. If you are taking organic chemistry, it's a good idea to memorize important functional groups or at least bookmark a past listing functional groups so that you can refer to it.
Composition of Air
Learn about chemical composition of the Earth's air. Percentages of the most common compounds are given, according to volume.
Learn about chemical composition of the Earth's air. Percentages of the most common compounds are given, according to volume.
Chemistry Careers
Here's a look at some of the career options available to you in the field of chemistry.
Here's a look at some of the career options available to you in the field of chemistry.
How to Remove Rust Stains
Rust stains can be a challenge to remove because the stain consists of tiny iron oxide particles, plus some treatments actually set the stain rather than remove it. Use a little chemistry know-how to successfully remove a rust stain.
Rust stains can be a challenge to remove because the stain consists of tiny iron oxide particles, plus some treatments actually set the stain rather than remove it. Use a little chemistry know-how to successfully remove a rust stain.
Scientific Method Steps
The scientific method is a method for conducting an objective investigation. The scientific method involves making observations and conducting an experiment to test a hypothesis. Here are the steps of the scientific method.
The scientific method is a method for conducting an objective investigation. The scientific method involves making observations and conducting an experiment to test a hypothesis. Here are the steps of the scientific method.
Chemical Engineering Salary
Chemical engineering is one of the highest paying degrees for entry level jobs, with even higher payscales for experienced chemical engineers. Here's a look at typical salary ranges for chemical engineers.
Chemical engineering is one of the highest paying degrees for entry level jobs, with even higher payscales for experienced chemical engineers. Here's a look at typical salary ranges for chemical engineers.
Endothermic Reaction Examples
This is a list of chemical reactions that are endothermic reactions.
This is a list of chemical reactions that are endothermic reactions.
Perfume Recipe
Perfume is a classic gift, but it's even better if it is a scent that you made yourself, especially if you package it in a beautiful bottle. Perfume you make yourself is free from synthetic chemicals and is fully customized to your personal taste. Here's how to make your own perfume.
Perfume is a classic gift, but it's even better if it is a scent that you made yourself, especially if you package it in a beautiful bottle. Perfume you make yourself is free from synthetic chemicals and is fully customized to your personal taste. Here's how to make your own perfume.
Make Rock Candy
Rock candy is candy made by crystallizing sugar. You can grow sugar crystals yourself, plus add color and flavor to make rock candy that you can eat.
Rock candy is candy made by crystallizing sugar. You can grow sugar crystals yourself, plus add color and flavor to make rock candy that you can eat.
Why Onions Make You Cry
Find out why you cry when you cut onions and how you can keep it from happening.
Find out why you cry when you cut onions and how you can keep it from happening.
Which Mad Scientist Are You? - Mad Scientist Personality Quiz
If you were a famous mad scientist, which mad scientist would you be? Take this fun multiple choice quiz to find out.
If you were a famous mad scientist, which mad scientist would you be? Take this fun multiple choice quiz to find out.
Why Does Hair Turn Gray?
Have you ever wondered why hair turns gray as you get older and whether there is something you can do to prevent graying or at least slow it down? Here's a look at what causes hair to turn gray and some of the factors that affect graying.
Have you ever wondered why hair turns gray as you get older and whether there is something you can do to prevent graying or at least slow it down? Here's a look at what causes hair to turn gray and some of the factors that affect graying.
Freezing Point of Water
What is the freezing point of water or the melting point of water? Are the freezing point and melting point the same? Are there any factors that affect the freezing point of water? Here's a look at the answers to these common questions.
What is the freezing point of water or the melting point of water? Are the freezing point and melting point the same? Are there any factors that affect the freezing point of water? Here's a look at the answers to these common questions.
Flamingo Color
Have you ever wondered why flamingos are pink or orange? You've probably heard it has something to do with what flamingos eat, but do you know what exactly it is that produces the color?
Have you ever wondered why flamingos are pink or orange? You've probably heard it has something to do with what flamingos eat, but do you know what exactly it is that produces the color?
Empirical Formula
Learn how to find the empirical formula from percent composition data.
Learn how to find the empirical formula from percent composition data.
Law, Hypothesis, Theory
Learn about the difference between a scientific law, hypothesis, and theory.
Learn about the difference between a scientific law, hypothesis, and theory.
What Are Moles?
Find out what a mole is and why this unit is used in chemistry.
Find out what a mole is and why this unit is used in chemistry.
Element Definition
Element definition, as used in chemistry, chemical engineering, and physics.
Element definition, as used in chemistry, chemical engineering, and physics.
Buffers
Buffers are an important concept in acid-base chemistry. Here's a look at what buffers are and how they function.
Buffers are an important concept in acid-base chemistry. Here's a look at what buffers are and how they function.
Synthesis Reaction
A synthesis reaction or direct combination reaction is one of the most common types of chemical reactions. Here is a definition, explanation, and example of a synthesis reaction.
A synthesis reaction or direct combination reaction is one of the most common types of chemical reactions. Here is a definition, explanation, and example of a synthesis reaction.
What Is Muriatic Acid?
Here is a look a what muriatic acid is, where you can find it, and the uses of muriatic acid.
Here is a look a what muriatic acid is, where you can find it, and the uses of muriatic acid.
Hazard Symbol Quiz - Test Your Recognition of Hazard Symbols
How well do you know laboratory safety signs and hazard symbols? Take this fun quiz to see if you can recognize potential dangers in the lab.
How well do you know laboratory safety signs and hazard symbols? Take this fun quiz to see if you can recognize potential dangers in the lab.
What Does a Meth Lab Smell Like?
No one wants to live next door to a meth lab, but how do you know if there is one in your neighborhood? One way you might suspect illegal drugs are being made is by their smell.
No one wants to live next door to a meth lab, but how do you know if there is one in your neighborhood? One way you might suspect illegal drugs are being made is by their smell.
Density of Water
The density of water is related to its specific gravity. The density is the weight of the water per its unit volume, which depends on the temperature of the water. While you can round the density to 1 gram per milliliter, here are more precise values for you.
The density of water is related to its specific gravity. The density is the weight of the water per its unit volume, which depends on the temperature of the water. While you can round the density to 1 gram per milliliter, here are more precise values for you.
Hard and Soft Water
Chemistry of hard and soft water, with information about soaps, detergents, and water softening agents.
Chemistry of hard and soft water, with information about soaps, detergents, and water softening agents.
10 Physical Change Examples
This is a list of 10 examples of physical changes.
This is a list of 10 examples of physical changes.
4th Grade Science Projects
Get ideas for 4th grade science fair projects. These are experiments and topics suitable for elementary school level science fair projects.
Get ideas for 4th grade science fair projects. These are experiments and topics suitable for elementary school level science fair projects.
Rohypnol Fast Facts
Learn what rohypnol is, why people take rohypnol, how it's made, and what risks are associated with using rohypnol.
Learn what rohypnol is, why people take rohypnol, how it's made, and what risks are associated with using rohypnol.
Oobleck Recipe
Learn how to make Oobleck, a type of slime that has properties of both liquids and solids.
Learn how to make Oobleck, a type of slime that has properties of both liquids and solids.
Examples of Ionic Bonds
Here are examples of ionic bonds and ionic compounds.
Here are examples of ionic bonds and ionic compounds.
20 Science Questions Quiz - 20 Science Facts and Questions
Take a multiple choice quiz to test yourself about general knowledge in science.
Take a multiple choice quiz to test yourself about general knowledge in science.
What Is Fermentation?
Fermentation is a process used to produce wine, beer, yogurt and other products. Here's a look at the chemical process that occurs during fermentation.
Fermentation is a process used to produce wine, beer, yogurt and other products. Here's a look at the chemical process that occurs during fermentation.
Glowing Bubbles
Bubbles are already awesome, but glowing bubbles are even better. It is easy and safe to make bubbles glow, plus it doesn't require any hard-to-find materials. Here is what you do.
Bubbles are already awesome, but glowing bubbles are even better. It is easy and safe to make bubbles glow, plus it doesn't require any hard-to-find materials. Here is what you do.
6th Grade Science Projects
Get ideas for 6th grade science fair projects. These are topics and experiments suitable for upper grade school or entry level into middle school.
Get ideas for 6th grade science fair projects. These are topics and experiments suitable for upper grade school or entry level into middle school.
Acid-Base Titrations
An acid-base titration is a neutralization reaction that is performed in the lab in order to determine an unknown concentration of acid or base. The moles of acid will equal the moles of base at the equivalence point. Here's how to perform the calculation to find your unknown.
An acid-base titration is a neutralization reaction that is performed in the lab in order to determine an unknown concentration of acid or base. The moles of acid will equal the moles of base at the equivalence point. Here's how to perform the calculation to find your unknown.
Glowing Water
It's really easy to make glowing water that you can use as glowing water or as a glowing ingredient in other water-based projects.
It's really easy to make glowing water that you can use as glowing water or as a glowing ingredient in other water-based projects.
Base Definition
Base definition, as used in chemistry, chemical engineering, and physics.
Base definition, as used in chemistry, chemical engineering, and physics.
Bohr Model
The Bohr Model has an atom consisting of a small, positively-charged nucleus orbited by negatively-charged electrons. Here's a closer look at the Bohr Model, which is sometimes called the Rutherford-Bohr Model.
The Bohr Model has an atom consisting of a small, positively-charged nucleus orbited by negatively-charged electrons. Here's a closer look at the Bohr Model, which is sometimes called the Rutherford-Bohr Model.
Gram - Mole Conversions
Here are worked examples problems for mole to gram or gram to mole conversions.
Here are worked examples problems for mole to gram or gram to mole conversions.
Chemical Volcano
Making a baking soda and vinegar volcano is safe and easy, plus it only requires a few inexpensive kitchen ingredients.
Making a baking soda and vinegar volcano is safe and easy, plus it only requires a few inexpensive kitchen ingredients.
How Mood Rings Work
Mood rings have a stone that changes color depending on your emotions. Learn how mood rings work.
Mood rings have a stone that changes color depending on your emotions. Learn how mood rings work.
Why Babies Have Blue Eyes
Find out why babies are born with blue eyes.
Find out why babies are born with blue eyes.
Examples of Covalent Bonds
These are examples of covalent bonds and covalent compounds.
These are examples of covalent bonds and covalent compounds.
Black Light Glowing Materials
List of materials that glow under ultraviolet or black light.
List of materials that glow under ultraviolet or black light.
Periodic Properties
Learn about the periodic properties or trends in the periodic table of the elements.
Learn about the periodic properties or trends in the periodic table of the elements.
What Does pH Stand For?
Have you ever wondered what pH stands for or where the term originated? Here is the answer to the question and a look at the history of the pH scale.
Have you ever wondered what pH stands for or where the term originated? Here is the answer to the question and a look at the history of the pH scale.
pH Definition
pH definition, as used in chemistry, chemical engineering, and physics.
pH definition, as used in chemistry, chemical engineering, and physics.
Solubility Rules
This is a list of the solubility rules for ionic solids in water.
This is a list of the solubility rules for ionic solids in water.
Why Ice Floats
Learn about hydrogen bonding and density to understand why ice floats.
Learn about hydrogen bonding and density to understand why ice floats.
Slime Recipes
There's more than one way to make slime. Actually, there are lots of different recipes! Here are some of the best recipes for different types of slime, from normal slimy slime to eerie glow-in-the-dark slime.
There's more than one way to make slime. Actually, there are lots of different recipes! Here are some of the best recipes for different types of slime, from normal slimy slime to eerie glow-in-the-dark slime.
Calculate the Mean
It's very important to know how to calculate the mean or average of a set of numbers. Among other things, this will allow you to calculate your grade point average. However, you'll need to calculate the mean for several other situations, too.
It's very important to know how to calculate the mean or average of a set of numbers. Among other things, this will allow you to calculate your grade point average. However, you'll need to calculate the mean for several other situations, too.
What Is a Variable in Science?
Variables are an important part of science projects and experiments. Here is an explanation of what a variable is and a description of the different types of variables you'll encounter in science.
Variables are an important part of science projects and experiments. Here is an explanation of what a variable is and a description of the different types of variables you'll encounter in science.
Normality Calculation
The normality of a solution is the gram equivalent weight of a solute per liter of solution. Here's an example of how to calculate the normality of a solution.
The normality of a solution is the gram equivalent weight of a solute per liter of solution. Here's an example of how to calculate the normality of a solution.