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Chemistry: Most Popular Articles

These articles are the most popular over the last month.
Know the Difference Between Baking Powder &...
Learn the difference between baking powder and baking soda and how to make ingredient substitutions if you're out!
Science Quiz - Test Your General Science...
Test your general science knowledge with this fun multiple choice quiz.
How Do I Substitute Between Baking Powder and...
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.
20 Chemistry Questions Quiz - 20 Chemistry...
Take a multiple choice quiz to test yourself about general knowledge in chemistry.
10 Examples of Chemical Changes That We...
Get examples of 10 chemical changes.
Understand the Difference Between Independent...
The difference between independent and dependent variables in a scientific experiment is which variable is being measured. Here's an explanation of how to tell these critical variables apart.
Heterogeneous and Homogeneous Mixtures: What's...
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.
5 Simple Buttermilk Recipes
If you don't have buttermilk on hand, it's easy to apply a little kitchen chemistry to make buttermilk from regular milk. Here are 5 simple buttermilk recipes.
10 Examples of Physical Changes
Physical changes involve a new form of matter, but no chemical reaction. This is a list of 10 examples of physical changes.
Elements by the Numbers: From Hydrogen to...
Here's a list of chemical elements ordered by increasing atomic number. The names and element symbols are provided.
How to 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.
Independent Variable Definition
This is the definition of an independent variable.
Working on a Science Project? Start With the...
Science fair and research projects apply the scientific method. Here's an explanation of the scientific method and how the scientific method is used.
Scientific Experiments: Why We Need Control...
A control group in a scientific experiment is a group separated from the rest of the experiment where the independent variable being tested cannot influence the results.
What's the Difference Between a Scientific...
Learn about the difference between a scientific law, hypothesis, and theory.
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
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.
Everything You Need to Know About Crystal Meth
Learn what crystal meth is, why people take crystal meth, how it's made, and what risks are associated with using methamphetamine.
What Is Borax and Where Can You Get It?
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.
Science Experiments: What Are Variables?
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.
20 Science Questions Quiz - 20 Science Facts...
Take a multiple choice quiz to test yourself about general knowledge in science.
Are Apple Seeds Poisonous?
Apple seeds do contain a small amount of cyanide, which is a lethal poison, but humans are protected from it in several ways.
What Temperature Does Water Boil?
At what temperature does water boil? What determines the boiling point of water? Here's the answer to this common question.
Is It Okay To 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.
Control vs. Experimental Group: How Do They...
The difference between a control group and an experimental group is one group is exposed to the conditions of the experiment and the other is not.
What's the Difference Between Chemical and...
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 Calculate Percent Error
Percent error or percentage error expresses as a percentage the difference between an approximate or measured value and an exact or known value. Here is how to calculate percent error, with example calculations.
What Are Chemical and Physical Changes?
Find out what chemical and physical changes are, get examples, and learn how to tell them apart.
What Are Examples of a Hypothesis?
Here are examples of a scientific hypothesis and how to improve a hypothesis to use it for an experiment.
Metric to Metric Conversions Quiz - Test Your...
Metric to Metric Quiz - Test Your Chemistry Knowledge
Why You Shouldn't Mix 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.
Check Out These Natural Mosquito Repellents
Learn about natural ways to repel mosquitoes and develop strategies to reduce your exposure to them.
Periodic Table - Interactive Periodic Table of...
This is an interactive periodic table or chart of the chemical elements. Click on an element symbol to get detailed information for each element.
How To Build a Classic Baking Soda Volcano
The chemical volcano is the classic science fair project. Baking soda and vinegar combine to produce carbon dioxide, which builds up pressure in the center to cause an eruption of foamy lava. You can even color the lava to resemble a real volcanic eruption. This step-by-step recipe will show you how to make your own baking soda volcano.
Chemistry 101: What Chemistry Is and Why You...
Start learning chemistry with the basics. Learn what chemistry is, what chemists do, and why it's important to study chemistry.
10 Examples of Chemical Reactions in Everyday...
Chemistry happens in the real world, not just a lab. Here are 10 examples of chemical reactions in everyday life.
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.
How Much of The Human Body Is Water?
Have you ever wondered how much of your body is water? The percentage of water varies according to your age and gender. Here's a look at how much water is inside you.
Handy List of All the Element Symbols
Learn the one and two letter symbols for the chemical elements using this handy list.
How to Calculate the Concentration of a...
Calculating concentration is a basic skill needed by chemistry students. This is a list of steps and examples to 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.
Understand the Difference Between Accuracy and...
This is an explanation of the difference between accuracy and precision.
What Is the Difference Between Organic and...
Organic compounds and inorganic compounds form the basis for chemistry. Here is a look at the difference between organic and inorganic compounds, plus examples of each type.
3 Steps to Writing Balanced Chemical Equations
Use these step by step instructions to write and balance chemical equations.
How Can I Get Fluoride Out of My Water?
Learn how to remove fluoride from drinking water.
What Are the Types of Chemical Reactions?
Learn about the different types of chemical reactions and get examples of the reaction types.
Can You Drink too Much Water?
Is it really possible to drink to much water? Learn about water intoxication and hyponatremia.
What Is a Pure Substance?
A pure substance or chemical substance is a material that is homogeneous and has constant properties throughout the sample. Here are examples of pure substances.
Learn How To Determine Significant Figures
Learn what significant figures are and how they are used with respect to scientific measurements and calculations.
Element Picture Quiz - Test Your Recognition of...
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.
What Is a Dependent Variable?
A dependent variable is the variable being tested in a scientific experiment.
How to Convert Celsius to Kelvin
It is easy to convert Celsius to Kelvin with these steps.
What 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.
Remove Rust Stains Quickly and Easily at Home
Rust stains can be a challenge to remove because some treatments actually set the stain rather than remove it. Use a little chemistry know-how to successfully remove a rust stain.
Getting a Degree in Chemistry? Check Out These...
Here's a look at some of the career options available to you in the field of chemistry.
What's the Difference Between Ionic and...
Learn to distinguish between ionic and covalent bonds, and determine whether a bond will be polar or nonpolar.
Understanding Endothermic and Exothermic...
Learn about endothermic and exothermic chemical reactions and get instructions to perform your own hot and cold chemistry.
Differences Between DNA and RNA
Although DNA and RNA both carry genetic information, there are quite a few differences between them. This is a comparison of the differences between DNA versus RNA, including a quick summary and a detailed table of the differences.
Hazard Symbol Quiz - Test Your Recognition of...
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 to Blow Amazing Bubbles That Won't Pop
If you're tired of bubbles that pop as soon as you blow them, try this recipe for unbreakable bubbles!
How To Make Saline Solution at Home
Saline solution refers to a salt solution, which you can prepare yourself using readily available materials. The solution can be used as a disinfectant, sterile rinse, or for labwork.
The 5 Branches of Chemistry
Here is a list of the 5 main branches of chemistry, along with an explanation of what each of the branches studies.
Know the Types of Chemical Bonds
Learn about the different types of chemical bonds and the forces that affect the way electrons are shared.
Science Laboratory Safety Signs
This is a collection of safety signs commonly seen in a science laboratory, particularly a chemistry lab.
Chem Students Must Know these 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.
What Is Alum?
Find out what alum is and the uses of alum.
How To Remove Super Glue (Yes, It's Possible)
Although Super Glue sticks to just about anything almost instantly, you can remove it, even from skin and clothes. Here's how to remove Super Glue or other cyanoacrylate adhesive.
Understanding Molecular and Empirical Formulas
Here is a look at what the molecular formula and empirical formula are and steps for finding the molecular formula and empirical formula.
Balancing Equations Practice Quiz
Practice balancing chemical equations with this multiple choice quiz.
Learn What Chemical Properties Are and Get...
Here is an explanation of what chemical properties are, plus several examples of chemical properties of matter.
Learn Key Acids and Bases Definitions
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.
What Is an Isotope?
Isotopes definition, as used in chemistry, chemical engineering, and physics.
How to Make a Bouncing Polymer Ball
Use chemistry to make a bouncing polymer ball, then alter the procedure to see the effect the changes have on the characteristics of the bouncing ball.
Big Collection of Printable PDF Periodic Tables
Download or print these PDF and PNG periodic tables to help work chemistry problems or to predict properties of the elements. The printable tables work well on mobile devices, such as Android phones, iPads as well as PC and Macs.
Your Guide on How to Make Smoke Bombs
Learn how to make a smoke bomb. This is the list of materials required for making your own smoke bomb.
What Is the Difference Between a Cation and an...
Cations and anions are both ions. The difference between a cation and an anion is the net electrical charge of the ion. Here are the details on the difference and how to tell them apart.
Easily Restore Tarnished Silver with this...
Instructions for making your own chemical dip to polish silver.
What Is a Molotov Cocktail?
You may have heard about Molotov cocktails on the new or seen them in video games, but do you know what they are? Here's a description of a Molotov cocktail and a little history of the device's invention.
What Is the Equation for the Reaction Between...
The reaction between baking soda and vinegar generates carbon dioxide gas, which is used in chemical volcanoes and other projects. Here is a look at the reaction between baking soda and vinegar and the equation for the reaction.
How to Make Homemade Slime
This is a classic recipe for homemade slime.
What Is the Difference Between a Chemical...
Learn how to distinguish between a chemical property and a physical property of matter.
How to Determine the Empirical and Molecular...
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.
How to Calculate Normality
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.
Anode vs. Cathode: What's the Difference?
Here is how to define anode and cathode and how to remember which is which.
Learn About the Branches of Chemistry
There are several branches of chemistry. Here is a list of the main branches of chemistry, with an overview of what each branch of chemistry studies.
Do You Know Why Hair Turns 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.
Element Symbol Quiz - Element Symbols for the...
Take a multiple choice quiz to test yourself about the symbols for the first 20 elements.
6th Grade Science Quiz - Test Your 6th Grade...
Test your 6th grade general science knowledge with this fun multiple choice quiz.
What Are the 7 Diatomic Elements?
There are seven elements that form diatomic molecules. This is a list of the seven diatomic elements.
16 Things That Glow in Black or Ultraviolet Light
List of materials that glow under ultraviolet or black light.
Which Alchemy Element Are You? - 5 Elements...
If you were an alchemical element which of the 5 elements would you be? The classic 5 elements of alchemy are earth, fire, air, water and aether. Which element best represents your personality? Take this fun multiple choice quiz to find out.
Tips To Make Hot Peppers Stop Burning
Here's a look at what you can do to stop hot peppers from burning, plus an explanation of why some home remedies actually make it worse.
List of All the Elements That Are Metals
Most elements are metals. This group includes the alkali metals, alkaline earth metals, transition metals, basic metals, and rare earth elements.
Metals vs. Nonmetals: What's the Difference?
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.
6 Homemade 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.
Basics of Acids and Bases Quiz - Test Your...
Basics of Acids and Bases Quiz - Test Your Chemistry Knowledge
3 Ways To Calculate Atomic Mass
The atomic mass or atomic weight of an element is a weighted average of all the element's isotopes based on their natural abundance. It is simple to calculate the atomic mass of an element with these steps.
What Do 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.
What Is the 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.
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.
Which Mad Scientist Are You? - Mad Scientist...
If you were a famous mad scientist, which mad scientist would you be? Take this fun multiple choice quiz to find out.
12 Easy Chemistry Projects You Can Do at Home
Want to do science but don't have your own laboratory? Don't worry if you don't have a chemistry lab.This list of science activities will allow you to do experiments and projects with common materials you can easily find around your home.
Which Elements Are in the Human Body?
Elements in the Human Body. Chemistry.
Ology List of Sciences
An ology is a discipline of study, as indicated by having the -ology suffix. This is a list of science ologies.
What Makes Water a Polar Molecule?
Water is a polar molecule. Here is the explanation for why water is a polar molecule and why water is a polar solvent.
What Is the pH of Water?
The pH of water is a value you should know, plus it's good to understand why the actual pH of water might differ from the theoretical value.
Atomic Structure Quiz - Test Your Chemistry...
Atomic Structure Quiz - Test Your Chemistry Knowledge
Why You Shouldn't Mix Bleach and Vinegar
Mixing bleach and vinegar is a bad idea. Toxic chlorine gas is released, which essentially serves as a way to wage chemical warfare on yourself. Many people mix bleach and vinegar, knowing it's dangerous, but either underestimating the risk or else hoping for increased cleaning power. Here's what you should know about mixing bleach and vinegar, before you try it.
15 Fun and Easy 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.
A Slimy Chemistry Experiment You Should Try
Get step-by-step instructions for making classic slime.
Chemical Bonds & Compounds Chemistry Quiz
Chemical Bonds & Compounds Chemistry Quiz: electron dot structures ionic covalent bonds lewis electron dot structures chemistry quiz chemistry quizzes
Interesting High School Science Project Ideas
Get ideas for great high school science projects. These are projects targeted from the 9-12 grade educational level.
How to Calculate Mass Percent in Chemistry
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.
What are Some Examples of Covalent Compounds?
These are examples of covalent bonds and covalent compounds.
What is the Bohr Model of the Atom?
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.
Quick Facts About Muriatic Acid
Here is a look a what muriatic acid is, where you can find it, and the uses of muriatic acid.
9th Grade Science Test
Test your general science knowledge of 9th grade science with this fun online multiple choice quiz.
Periodic Table Quiz - Test Your Periodic Table...
Test your periodic table knowledge with this fun multiple choice quiz.
How to Convert Kelvin to Celsius in 1 Step
It is easy to convert Kelvin to Celsius with these steps.
List 10 Types of Solids, Liquids, and Gases
Get examples of types of solids, liquids, and gases and learn about the transitions or phase changes between them.
What Are Some Examples of Compounds with Ionic...
Here are examples of ionic bonds and ionic compounds.
Why Do Cheap Rings Turn Your Fingers Green?
Have you ever had a ring turn your finger green or wondered why some people say rings turn their fingers green? The reason this happens is because of the metal content of the ring. Here's a look at what's happening.
Baking Soda and Vinegar Erupting Volcano
The baking soda and vinegar volcano is the classic chemical volcano that you see at science fairs. Watch how easy it is to make a chemical volcano that produces a memorable eruption.
Chemistry Laboratory Safety Quiz - Test Your...
Chemistry Laboratory Safety Quiz - Test Your Chemistry Knowledge
Examples of Everyday Chemistry in the World...
Chemistry is a big part of your everyday life. You find chemistry in daily life in the foods you eat, the air you breathe, your soap, your emotions and literally every object you can see or touch. Here's a look at some everyday chemistry.
8th Grade Science Quiz - Could You Pass 8th...
Could you pass an 8th grade science quiz? Test your general science knowledge with this fun multiple choice quiz.
Make a Color Wheel of 'Magic' Milk Using Science
If you add food coloring to milk, not a whole lot happens, but it only takes one simple ingredient to turn the milk into a spinning color wheel. Here is what you do.
Scientific Method Quiz - Chemistry Tests and...
Scientific Method Quiz - Chemistry Tests and Quizzes
What are the 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.
Who Is the Father of Chemistry?
Who is the Father of Chemistry? Here is a look at the best answers to this question and the reasons why each of these people might deserve the title.
What Is the 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.
Element Symbol Quiz - Test Your Chemistry...
Element Symbol Quiz - Test Your Chemistry Knowledge
What Causes Brain Freeze?
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 Deal With Exposure to Tear Gas
Learn what to expect if you encounter tear gas and take steps to minimize your exposure and speed your recovery.
What Is the Chemical Composition of Air?
Learn about chemical composition of the Earth's air. Percentages of the most common compounds are given, according to volume.
An Easy Way 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.
Chem Students Should Know These Acid and Base...
Here are the names and formulas of some of the common acids and bases.
Better Safe than Sorry in the Chem Lab - Lab...
Make your chemistry laboratory experience safe by following these simple rules.
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.
Why Onions Make You Cry
Find out why you cry when you cut onions and how you can keep it from happening.
How Does the Fermentation Process Actually Work?
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.
Quick Chemistry Facts About the Ideal Gas...
Gas Constant (R) definition, as used in chemistry, chemical engineering, and physics.
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.
What You Need to Know to Calculate pH
Review how to calculate pH and what pH means with respect to hydrogen ion concentration, acids, and bases.
20 Chemistry Questions Quiz #3 - 20 Chemistry...
Do you think you have a basic understanding of chemistry? Take a multiple choice quiz to test yourself about general knowledge in chemistry.
Make Your Own Dry Ice with These Tips
It's possible to make dry ice at home. Here are instructions and safety information on how to do it.
Bleach and Alcohol Make Chloroform
Mixing bleach and alcohol is a bad idea because the chemicals react to make chloroform. Here's a look at what happens and the risks associated with mixing these chemicals.
Make Your Own Insect Repellent with Natural...
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.
What Is a Controlled Experiment?
One of the most common types of experiment is a controlled experiment. Here is a look at what a controlled experiment is and why this type of experiment is so popular.
A List of the Strong Acids
These are the strong acids. There are only six strong acids, so you might want to commit the list of strong acids to memory.
Look Up Definitions in the Chemistry Glossary
Use this chemistry glossary to look up the definitions of chemistry terms beginning with the letter A.
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