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Chemistry: Most Popular Articles

These articles are the most popular over the last month.
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.
Can You Substitute Baking Soda for 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.
20 Chemistry Questions Quiz - 20 Chemistry...
Take a multiple choice quiz to test yourself about general knowledge in chemistry.
How to Use a Periodic Table
The periodic table of the elements contains a wide variety of information. Information such as element symbols, atomic number and atomic mass is most common, but some periodic tables can contain even more data than previously expected. This will show you how to use a periodic table to gather information about the elements.
Basics of Acids and Bases Quiz - Test Your...
Basics of Acids and Bases Quiz - Test Your Chemistry Knowledge
Can You Use Baking Powder Instead of Baking Soda?
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.
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
11 All-Natural Easter Egg Dyes
You can use safe, natural ingredients to make natural dyes to color Easter eggs. This is a fun Easter project that is fun and easy for the whole family to try this holiday season.
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.
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.
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 substitute recipes.
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.
3 Steps to Writing Balanced Chemical Equations
Use these step by step instructions to write and balance chemical equations.
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.
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 charactertistics of the bouncing ball.
How To Calculate Percent Error in Chemistry
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.
At 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.
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.
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.
Can You Drink too Much Water?
Is it really possible to drink to much water? Learn about water intoxication and hyponatremia.
10 Examples of Chemical Changes That We...
Chemical changes involve chemical reactions and the creation of new products. This is a list of 10 examples of chemical changes.
Periodic Tables You Can Print
Download or print these 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.
Anode vs. Cathode: What's the Difference?
Here is how to define anode and cathode and how to remember which is which.
Quick Chemistry Facts About the Ideal Gas...
Gas Constant (R) definition, as used in chemistry, chemical engineering, and physics.
A List of the 6 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.
How Much of The Human Body Is Water? The...
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.
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.
What Is STP in Chemistry?
Here's an explanation of what STP is in chemistry and why it is useful, particularly when dealing with gases.
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 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!
Understanding Endothermic and Exothermic...
Learn about endothermic and exothermic chemical reactions and get instructions to perform your own hot and cold chemistry.
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.
What's the Difference Between Acids and Bases?
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.
How Can I Get Fluoride Out of My Water?
Learn how to remove fluoride from drinking water.
Check Out These Natural Mosquito Repellents
Learn about natural ways to repel mosquitoes and develop strategies to reduce your exposure to them.
What Are the 7 Diatomic Elements?
There are seven elements that form diatomic molecules. This is a list of the seven diatomic elements.
What Are the Types of Chemical Reactions?
Learn about the different types of chemical reactions and get examples of the reaction types.
How to Calculate Theoretical Yield of a...
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.
The Science Behind the Baking Soda and Vinegar...
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.
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 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.
Balancing Equations Practice Quiz
Practice balancing chemical equations with this multiple choice quiz.
What You Need to Know About pH
Review how to calculate pH and what pH means with respect to hydrogen ion concentration, acids, and bases.
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.
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.
pH of Household Products Quiz
pH of Household Products Quiz: multiple choice questions chemistry quiz metal quiz hydrogen ion chemistry articles
Name 10 Examples of Physical Changes
This is a list of 10 examples of physical changes.
Chem Students Should Know These Common Acids...
Here are the names and formulas of some of the common acids and bases.
What are the Strong Bases?
Strong bases are bases which completely dissociate in water. Here is a list of the most common strong bases.
How to Make Modeling Clay at Home
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.
How to Make Homemade Slime
This is a classic recipe for homemade slime.
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.
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 Are Examples of a Hypothesis?
Here are examples of a scientific hypothesis.
Our A-to-Z List of Precious and Semiprecious...
This alphabetical list of gemstones includes the mineral names of the gemstones as well as links to photos of the gems.
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.
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 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.
How to Convert Celsius to Kelvin
It is easy to convert Celsius to Kelvin with these steps.
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.
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.
Handy List of All the Element Symbols
Learn the one and two letter symbols for the chemical elements.
Understand the Difference Between Independent...
The difference between independent and dependent variables in a scientific experiment is which variable is being measured.
Ionic Bond Definition
Ionic Bond definition, as used in chemistry, chemical engineering, and physics.
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.
pH of Common Chemicals
Here's a table of the pH of several common chemicals.
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.
Henderson Hasselbalch Equation and Example
You can calculate the pH of a buffer solution or the concentration of the acid and base using the Henderson Hasselbalch equation. Here's a look at the Henderson Hasselbalch equation and a worked example that explains how to apply the equation.
6th Grade Science Quiz - Test Your 6th Grade...
Test your 6th grade general science knowledge with this fun multiple choice quiz.
What are the Solubility Rules?
This is a list of the solubility rules for ionic solids in water.
Acids and Bases - 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.
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.
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.
What Determines the Strength of an Acid or Base?
Learn about strong and weak acids and bases. Get definitions and examples of each type.
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.
20 Science Questions Quiz - 20 Science Facts...
Take a multiple choice quiz to test yourself about general knowledge in science.
Gram to Mole Conversions
This worked example problem shows how to convert the number grams of a molecule to the number of moles of the molecule.
What Are Chemical and Physical Changes?
Find out what chemical and physical changes are, get examples, and learn how to tell them apart.
Remove Rust Stains Quickly and Easily at Home
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.
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.
Easily Restore Tarnished Silver with this...
Instructions for making your own chemical dip to polish silver.
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 STP?
STP, Standard Temperature and Pressure definition, as used in chemistry and other physical sciences.
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.
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.
How to Make Homemade Rock Candy
These are step by step instructions for growing your own sugar crystals or rock candy.
Chemical Bonds & Compounds Chemistry Quiz
Chemical Bonds & Compounds Chemistry Quiz: electron dot structures ionic covalent bonds lewis electron dot structures chemistry quiz chemistry quizzes
What Are the Rules for Assigning Oxidation...
Learn how to assign oxidation numbers to keep track of the distribution of electrons during a chemical reaction.
How to Balance Equations
This is a collection of printable worksheets to practice balancing equations. The printable worksheets are provided in pdf format with separate answer keys.
A Slimy Chemistry Experiment You Should Try
Get step-by-step instructions for making classic slime.
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.
Nernst Equation
The Nernst equation is used to calculate the voltage of an electrochemical cell or to find the concentration of one of the components of the cell. Here is a look at the Nernst equation and an example of how to apply it to solve a problem.
Combustion Reactions
This is an overview of combustion reactions, including what they are, the general format for the reaction, and examples of combustion reactions.
Chemical Reaction Classification Quiz - Test...
There are many different types of chemical reactions. There are single and double displacement reactions, combustion, decomposition reactions and synthesis reactions. See if you can identify the type of reaction in this ten question chemical reaction classification quiz.
Metric to Metric Conversions Quiz - Test Your...
Metric to Metric Quiz - Test Your Chemistry Knowledge
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.
Understand Marijuana and THC
Learn what marijuana and THC are, why people use marijuana, where it comes from, and what risks are associated with using marijuana.
4 Factors that Affect Chemical Reaction Rates
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.
16 Things That Glow in Black or Ultraviolet Light
List of materials that glow under ultraviolet or black light.
Metals List
Most elements are metals. This group includes the alkali metals, alkaline earth metals, transition metals, basic metals, and rare earth elements.
What are Some Covalent Compounds?
These are examples of covalent bonds and covalent compounds.
Make Your Own pH Indicator with Red Cabbage
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.
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.
What Is an Isotope?
Isotopes definition, as used in chemistry, chemical engineering, and physics.
Chemistry 101: What It Is and Why You Should...
Start learning chemistry with the basics. Learn what chemistry is, what chemists do, and why it's important to study chemistry.
Learn about Preservatives BHA and BHT
Butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) are added to many foods to prevent fat spoilage. This article describes what BHA and BHT are, what they do, and how they do it. There is a fairly lengthy list of references because there is controversy over the health effects of BHA, BHT, and other additives.
What Is Alum?
Find out what alum is and the uses of alum.
Sugar and String Crystal Easter Eggs
Sugar and string Easter egg ornaments are a fun family craft idea, plus you can include a lot of science in this project. You can make smaller hollow string ornaments to hang or put in baskets or you can make a large crystal egg to use as an Easter basket.
Fun Science Project Idea: Make Ice Cream in a...
Make Ice Cream in a Baggie - Freezing Point Depression and Colligative Properties
What Are 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.
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.
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.
The Proper Way to Balance Redox Reactions
Step-by-step instructions for balancing redox reactions for conservation of mass and charge in electrochemistry.
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 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.
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?
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.
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.
What Are the Three Types of RNA? What Are Their...
One common homework and test question asks you to name the three types of RNA and list their functions. Here's the answer.
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.
Scientific Method Quiz - Chemistry Tests and...
Scientific Method Quiz - Chemistry Tests and Quizzes
Why Onions Make You Cry
Find out why you cry when you cut onions and how you can keep it from happening.
Allotrope Definition - Chemistry Glossary...
Allotrope definition, as used in chemistry, chemical engineering, and physics.
Are Apple Seeds Poisonous?
Apples, along with cherries, peaches and almonds, are members of the rose family. The seeds of apples and these other fruits contain natural chemicals that are toxic to some animals. Are they poisonous to humans? Here's a look at the toxicity of apple seeds.
8 Facts About Crack Cocaine
Learn what crack cocaine is, why people take crack, how it's made, and what risks are associated with using crack cocaine.
DIY: How to Create Your Own Perfume Scent
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.
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.
Ionic Compounds Nomenclature Quiz - Can You...
This multiple choice quiz covers ionic compound nomenclature. Test your ability to name ionic compounds and to write the formula of ionic compounds from their names.
Chemistry Glossary 'A' Terms
Use this chemistry glossary to look up the definitions of chemistry terms beginning with the letter A.
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.
How to Calculate Mass Percent Composition
This is a worked example problem showing how to calculate mass percent composition.
9th Grade Science Test
Test your general science knowledge of 9th grade science with this fun online multiple choice quiz.
What Is the Mole Unit of Measurement?
Find out what a mole is and why this unit is used 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.
Rohypnol Fast Facts
Learn what rohypnol is, why people take rohypnol, how it's made, and what risks are associated with using rohypnol.
DNA versus 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.
What is the Difference Between Oxidation and...
Oxidation and reduction are two types of chemical reactions that often work together. Oxidation and reduction reactions involve an exchange of electrons between reactants. For many students, the confusion occurs when attempting to identify which reactant was oxidized and which reactant was reduced. What is the difference between oxidation and reduction?
What Are Buffer and What Do They Do?
Buffers are an important concept in acid-base chemistry. Here's a look at what buffers are and how they function.
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.
Chemistry Jokes, Puns, and Riddles
Read funny chemistry jokes, puns, and riddles and find other chemistry humor.
Acids and Bases - Weak Acids
A useful table of Ka and pKa values of common weak acids and their formulas.
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.
What Is Air Composed Of?
Learn about chemical composition of the Earth's air. Percentages of the most common compounds are given, according to volume.
A Beginner's Guide to Oxidation-Reduction...
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.
Printable Chemistry Worksheets
This is a collection of chemistry worksheets in pdf format. The answers to the questions are available on separate worksheets so you can fill them out and then check your work.
How to Make Flavored 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.
Know the Types of Chemical Bonds
Learn about the different types of chemical bonds and the forces that affect the way electrons are shared.
What is the Difference Between Molarity and...
Molarity and molality are both measures of concentration of solutions. One is the ratio of moles to volume of the solution and the other is the ratio of moles to the mass of the solution.
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.

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