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Chemistry: Most Popular Articles

These articles are the most popular over the last month.
How To Substitute Baking Powder and Baking Soda
Baking powder and baking soda are leavening agents that help baked goods to rise. Here is exactly how to substitute baking powder and baking soda.
10 Examples of Chemical Changes That We...
Chemical changes occur when chemical reactions between substances form new products. Get examples of 10 chemical changes in everyday life.
Is Red Bull Made from Bull Semen?
Find out whether the taurine in Red Bull came from bull semen.
Know the Difference Between Baking Powder &...
Baking powder and baking soda both make baked goods rise. Learn the difference between baking powder and baking soda and how to make ingredient substitutions.
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.
Know the Differences Between DNA and RNA
DNA and RNA both carry genetic information, but there are differences between them. This is a comparison of the differences between DNA versus RNA.
Heterogeneous and Homogeneous Mixtures: What's...
Heterogeneous and homogeneous refer to mixtures of materials in chemistry. Learn about the difference between these mixtures and get examples of each type.
10 Examples of Physical Changes
Physical changes involve a new form or shape of matter, but no chemical reaction. This is a list of 10 examples of physical changes.
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.
What Are the Types of Chemical Reactions?
When you mix chemicals, you may get a chemical reaction. Learn about the different types of chemical reactions and get examples of the reaction types.
Quick Chemistry Facts About the Ideal Gas...
The gas constant or R is an important constant in the ideal gas law. This is the definition and value of the gas constant.
3 Ways To Calculate Atomic Mass
The atomic mass or atomic weight of an element is a weighted average of the isotopes. Here are 3 simple ways to calculate atomic mass of an element.
Get Printable Worksheets To Practice Balancing...
This is a collection of printable worksheets to practice balancing equations. The printable worksheets are provided in pdf format with separate answer keys.
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.
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 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.
Can You Name the 7 Diatomic Elements?
There are seven elements that form homonuclear diatomic molecules or simple molecules with their own atoms. This is a list of the 7 diatomic elements.
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.
This Is How To Calculate Percent Error
Percent error or percentage error is the difference between an approximate or measured value and an exact or known value. Here is how to calculate percent error.
Independent Variable Definition and Examples
This is the definition of an independent variable, with examples. An independent variable is one of the key factors in a scientific experiment.
How To Build a Classic Baking Soda Volcano
The chemical volcano is the classic science fair project. This step-by-step recipe will show you how to make your own baking soda volcano.
Equation for the Baking Soda and Vinegar Reaction
The reaction between baking soda and vinegar is used in chemical volcanoes. Here is the equation for the reaction between baking soda and vinegar.
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.
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.
Common Examples of Covalent Compounds
These are examples of covalent bonds and covalent compounds and an explanation of the type of atoms expected to form this type of chemical bond.
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.
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.
20 Chemistry Questions Quiz - 20 Chemistry...
Take a multiple choice quiz to test yourself about general knowledge in chemistry.
What Is the Freezing Point of Water?
What is the freezing point of water or the melting point of water? Are the freezing and melting point the same? Here's the answer to these common questions.
10 Facts About Acids and Bases
Here are 10 facts about acids and bases to help you learn about acids, bases, and pH and complete your homework.
Elements by the Numbers From Hydrogen to...
Here's a list of all of the chemical elements of the periodic table ordered by increasing atomic number. The names and element symbols are provided.
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.
Understand the Difference Between a Cation and...
Cations and anions are both ions. The difference between a cation and an anion is the net electrical charge of the ion. Here is how to tell them apart.
Atom Basics Quiz - Test Your Chemistry Knowledge
Check how well you understand atoms and atomic theory with this fun multiple choice quiz.
Basics of Acids and Bases Quiz - Test Your...
Basics of Acids and Bases Quiz - Test Your Chemistry Knowledge
Know the 3 Types of RNA and Their Functions
One common homework and test question asks you to name the three types of RNA and list their functions. Here's the answer.
What STP Means in Chemistry
Here's an explanation of what STP is in chemistry and why it is useful, particularly when dealing with gases.
Examples of Compounds with Ionic Bonds
Ionic compounds form when elements share electrons. Here are examples of ionic bonds and ionic compounds.
Interactive Periodic Table of the Elements
This is an interactive periodic table of the elements. Click on an element symbol to get detailed facts for each element.
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. Here is how to calculate molarity of a solution.
Why You Shouldn't Mix Bleach and Ammonia
Mixing bleach and ammonia is extremely dangerous, since toxic vapors will be produced. Here are the chemical reactions involved and first aid advice.
How to Write a Lab Report
Lab reports are an essential part of all laboratory courses and a significant part of your grade. 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.
10 Examples of Mixtures
This is a list of 10 examples of mixtures and an explanation of whether the mixture is heterogeneous or homogeneous.
10 Examples of Everyday Chemistry in the World...
Chemistry is a big part of your everyday life. You find chemistry in daily life in foods you eat, air you breathe, soap, your emotions and literally every object you can see or touch. Here's a look at some examples of everyday chemistry.
What's the Difference Between Ionic and...
Ionic and covalent bonds hold molecules together. Learn to distinguish between ionic and covalent bonds, and determine whether a bond will be polar or nonpolar.
Anode vs. Cathode: What's the Difference?
Here is how to define anode and cathode and how to tell them apart. There's even a mnemonic to help keep them straight.
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.
What Are the First 20 Elements?
Here are the first 20 elements and their symbols.
What Is a Synthesis Reaction in Chemistry?
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.
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.
Does Adding Salt Lower the Boiling Point of...
Does adding salt lower the boiling point of water? You may have heard this and wondered if it was true. Here is a look at the science behind salt and boiling water.
Things That Glow in Black or Ultraviolet Light
This is a list of materials that glow under ultraviolet or black light because they contain fluorescent or phosphorescent molecules.
What Is Alum?
Find out what alum is and the uses of alum.
See How To Convert Grams To Moles
This worked example problem shows how to convert the number grams of a molecule to the number of moles of the molecule.
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 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.
Control vs. Experimental Group: How Do They...
Learn about the difference between the control group and the experimental group in a scientific experiment, including positive and negative controls.
Understand the Difference Between Accuracy and...
This is an explanation of the difference between accuracy and precision. Examples of accuracy and precision are also provided.
Big Collection of Printable PDF Periodic Tables
Download or print these PNG and PDF printable periodic tables to help work chemistry problems or to predict properties of the elements.
Metric to Metric Conversions Quiz - Test Your...
Metric to Metric Quiz - Test Your Chemistry Knowledge
Over 20 Fun Kitchen Science Experiments for Kids
Do you want to explore science, but can't find or can't afford chemicals? You can explore the fun of science in your own kitchen. Here are some science experiments and projects you can do that use common kitchen chemicals.
Learn the Properties and Characteristic of...
These are properties of covalent compounds, also known as molecular compounds.
3 Steps to Writing Balanced Chemical Equations
Balancing chemical equations is a key chemistry skill. Use these step by step instructions to write and balance chemical equations.
What Are the Properties and Characteristics of...
Here are the properties shared by the ionic compounds.
pH of Household Products Quiz
pH of Household Products Quiz - See whether you know the pH of chemicals around your home.
What Is the Mole Unit of Measurement?
If you take chemistry, you need to know about moles. Find out what a mole is and why this unit is used in chemistry.
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.
12 Easy Chemistry Projects You Can Do at Home
Want to do a chemistry project but don't have your own laboratory? Here is a collection of experiments using common materials you have at home.
Easy Way To Grow Borax Crystal Snowflakes
It's easy to grow your own sparkling clear or colored borax crystal snowflakes. Here's what you do.
Why You Shouldn't Mix Bleach and Vinegar
Mixing bleach and vinegar is a bad idea because it produces toxic chlorine gas. Here's what you should know about mixing bleach and vinegar, before you try it.
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.
Is It Safe To Drink Bleach? Will It Kill You?
Learn whether or not it is safe to drink bleach, what happens if you do, and whether it can kill you. Also answering the rumor if drinking bleach can help you pass a drug test
Handy List of All the Element Symbols
The elements are the basis for all matter. Learn the one and two letter symbols for the chemical elements of the periodic table using this handy list.
What Are the 3 Parts of a Nucleotide?
You may be asked to name the three parts of a nucleotide and explain how they are connected or bonded to each other. Here's the answer for both DNA and RNA.
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 Facts About Muriatic Acid
Here is a look a what muriatic acid is, where you can find it, and the uses of muriatic acid.
Understand the Difference Between Mass and Weight
Here is a simple explanation of the difference between mass and weight, with examples and a chart comparing the two concepts.
Science Quiz - Test Your General Science...
Test your general science knowledge with this fun multiple choice quiz. Topics include biology, chemistry, physics, astronomy, and geology.
What Is a Pure Substance? Definition and Examples
This is the definition of pure substance along with examples of things that are pure substances (and ones that aren't).
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.
How to Make Homemade Rock Candy or Sugar Crystals
These are step by step instructions for growing your own sugar crystals or rock candy.
Teach Yourself Chemistry
You can teach yourself general chemistry with this step-by-step introduction to the basic concepts.
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.
Know the Difference Between Physical and...
Learn how to distinguish between a chemical property and a physical property of matter. Here's the explanation of the distinction, with examples.
Know What Happens If You Mix Regular and...
Have you ever wondered what would happen if you mixed regular and synthetic motor oils? Here's the answer to the question and a look at whether you should ever mix oils or whether it could damage your vehicle's engine.
Why Salt Melts Ice
You know that you can sprinkle salt on an icy road or sidewalk to help keep it from becoming icy, but do you know how salt melts ice? Take a look at freezing point depression to understand how it works.
What Is the Density of Water?
The density of water is its weight per unit volume, which depends on temperature. Density is about 1 gram per milliliter, but here are more precise values for you.
Difference Between Atomic Mass and Mass Number
There is a difference between the meanings of atomic mass and mass number. Here is an explanation of the terms and how you can keep them straight.
Why Does Ice Float?
Ice floats on water. Have you ever wondered why? Learn about hydrogen bonding and density to understand why ice floats.
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.
How to Name Molecular or Covalent Compounds
Molecular compounds or covalent compounds are those in which the elements share electrons via covalent bonds. The only type of molecular compound a chemistry student is expected to be able to name is a binary covalent compound. Here is a look at the nomenclature rules for molecular compounds, plus some examples of how to name the compounds.
Synthesis Reactions and Examples
This is an explanation of what synthesis reactions are, the general form of the reaction, plus there are examples of synthesis reactions.
Learn How To Determine Significant Figures
Learn what significant figures are and how they are used with respect to scientific measurements and calculations.
How to Calculate Theoretical Yield
Here's how to calculate theoretical yield or how much product will be produced with given quantities of reactants.
What Is an Isotope?
Isotopes are one form an element can take. This is the definition of an isotope, with examples.
How to Calculate 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.
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. Learn how poisonous apple seeds really are.
Chem Students Should Know These Acid and Base...
Here are the names and formulas of some of the common acids and bases.
10 Interesting Periodic Table Facts
The periodic table organizes the elements according to their periodic properties. Find 10 periodic table facts that are interesting and informative.
10 Interesting DNA Facts
DNA or deoxyribonucleic acid codes for your genetic make-up. There are lots of facts about DNA, but here are 10 that are particularly interesting, important, or fun.
Learn About Combustion Reactions
This is an overview of combustion reactions, including what they are, the general format for the reaction, and examples of combustion reactions.
How to Remove Ball Point Pen Ink
Ball point pen ink is not removed with soap and water, but there is an easy and inexpensive way to remove pen ink from surfaces or clothing. Here is what you do.
Know the Major Laws of Chemistry
Here's a reference pages that describes the major laws of chemistry.
Everything You Need to Know About Crystal Meth
Need crystal meth facts? Learn what crystal meth is, why people takeit, how it's made, and what risks are associated with using methamphetamine.
What Are Chemical and Physical Changes?
Chemical and physical changes relate to matter properties. Find out what chemical and physical changes are, get examples, and learn how to tell them apart.
Use Boyle's Law To Find Volume of a Gas
Boyle's gas law states the volume of a gas is inversely proportional to the pressure of the gas when temperature is held constant. Problem example included.
4 Types of Inorganic Chemical Reactions
Classify inorganic chemical reactions into one of these general categories.
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.
pH of Common Chemicals
pH is a measure of the acidity of a substance. Here's a table of the pH of several common chemicals.
Balancing Equations Practice Quiz
Practice balancing chemical equations with this multiple choice quiz.
20 Science Questions Quiz - 20 Science Facts...
Take a multiple choice quiz to test yourself about general knowledge in science.
What Is the Most Conductive Element?
Here is a look at the three most electrically conductive elements. As you might expect, all three conductive elements are metals.
How To Make Sulfuric Acid at Home
Sulfuric acid is a useful acid to have on hand for a variety of home chemistry projects. However, it is not easy to obtain. Fortunately, you can make it yourself.
10 Examples of Electrical Conductors and...
This is a list of 10 examples of materials that are electrical conductors and insulators and an explanation of why some materials conduct better than others.
See How To Calculate Absolute and Relative Error
This is an example of how to calculate absolute and relative error.
Easy Ways To Remove Fluoride from Tap Water
Learn how to remove fluoride from drinking water and how to reduce your exposure other ways.
Functional Group Quiz - Test Your Recognition...
You see them all the time, but how well do you know your common organic functional groups? Take this quiz to see if you can match names to structures of functional groups. Put the FUN in FUNctional group!
Is Dissolving Salt in Water a Chemical Change...
Is dissolving salt in water an example of a chemical change or a physical change? Here's a look at the process that occurs when you dissolve salt in water and an explanation of the answer to the question.
Know the Types of Solids
There are 6 main types of solids, each characterized by specific properties and structures. Here is a look at how to categorize solids.
What's a Polar Bond in Chemistry?
This is the definition of polar bond.
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.
Fun and Interesting Chemistry Facts
Chemistry is a fascinating science, full of unusual trivia! Here are some fun and interesting chemistry facts for you.
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.
Learn What Chemical Properties Are and Get...
Here is an explanation of what chemical properties are, plus several examples of chemical properties of matter.
Explanation of the Octet Rule
The octet rule states that elements gain or lose electrons to attain an electron configuration of the nearest noble gas. Here is an explanation of how that works and why elements follow the octet rule.
What Molecular and Empirical Formula Are and...
Here is a look at what the molecular formula and empirical formula are and steps for finding the molecular formula and empirical formula.
Chemistry Basics: What Is pKa?
This is the definition of pKa. Chemistry.
Can You Drink too Much Water?
Is it really possible to drink to much water? Learn about water intoxication and hyponatremia.
Examples of 10 Balanced Chemical Equations
Writing balanced chemical equations is essential for chemistry class. Here are examples of 10 balanced equations you can review or use for homework.
Element Groups - Periodic Table of the Element...
Groups of Elements - This is an interactive periodic table of the elements.
Practice Chemistry with Worked Chemistry Problems
This is an alphabetical list of worked example chemistry problems. Printable worksheets with questions and answers are also provided.
Top 10 Chemistry Demonstrations and Experiments
This is the list of my top 10 favorite chemistry demonstrations, experiments, and activities.
How to Determine the Empirical and Molecular...
This step by step tutorial shows how to calculate the empirical and molecular formulas for a compound. Empirical formula is the simplest whole number ratio while molecular formula is the actual whole number ratio between the elements.
Examples of Endothermic Reactions
This is a list of chemical reactions that are endothermic reactions. You can try these reactions to make homemade cold packs.
How to Grow Great Crystals
Learn how to grow crystals yourself using common ingredients you have at home. Avoid common problems and get tips and tricks for successful crystal growth.
What Is the Importance of Chemistry?
What is the importance of chemistry? Why would you want to learn about chemistry? Chemistry is the study of matter and its interactions with other matter and energy. Here's a look at the importance of chemistry and why you should study it.
Why Do Cheap Rings Turn Your Fingers Green?
Have you ever had a ring turn your finger green? The reason this happens is because of the metal content of the ring. Here's a look at what's happening.
How Is DNA Transcribed to RNA?
Transcription is the name given to the chemical synthesis of RNA from a DNA template. In other words, DNA is transcribed in order to make RNA, which is then decoded to produce proteins.
Why Does Salt Melt Ice and Snow?
If you live someplace cold, you have experienced salt on sidewalks and roads. Have you ever wondered why? Here's how salt melts ice and snow.
10 RNA Facts
RNA or ribonucleic acid is used to translate instructions from DNA to make proteins in your body. Here are 10 interesting and fun facts about RNA.
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.
Free PDF Chemistry Worksheets To Download or...
Looking for free PDF chemistry worksheets that you can print? The answers to the questions are available on separate pages so you can fill them out and then check your work.
Chemical Bonds & Compounds Chemistry Quiz
Chemical Bonds & Compounds Chemistry Quiz: electron dot structures ionic covalent bonds lewis electron dot structures chemistry quiz chemistry quizzes
10 Examples of Matter
Can you name 10 examples of matter? Here is a list of more than 10 examples for you.
Try These 8th Grade Science Project Ideas
Get ideas for 8th grade science fair projects. These are experiments and topics suitable for upper middle school level science fair projects.
How to Make Homemade Slime (Classic Recipe)
This is a classic recipe for homemade slime. It's super-easy, plus I included tips for success.
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.
Do You Know the Difference Between Molarity and...
Both molarity and normality are measures of concentration. One is a measure of the number of moles per liter of solution and the other changes depending on the solution's role in the reaction.
Easy Way To Make Distilled Water at Home
These are step-by-step instructions for several methods of making distilled water at home.
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