Chemistry: Most Popular Articles
Learn the difference between baking powder and baking soda and how to make ingredient substitutions if you're out!
Test your general science knowledge with this fun multiple choice quiz.
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.
Take a multiple choice quiz to test yourself about general knowledge in chemistry.
Take a multiple choice quiz to test whether you are scientifically literate.
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.
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.
Learn about natural ways to repel mosquitoes and develop strategies to reduce your exposure to them.
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.
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.
Learn what crystal meth is, why people take crystal meth, how it's made, and what risks are associated with using methamphetamine.
Atom Basics Quiz - Test Your Chemistry Knowledge: structure quiz chemistry knowledge model of the atom question quiz science fundamentals
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.
Here's a list of chemical elements ordered by increasing atomic number. The names and element symbols are provided.
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.
Take a multiple choice quiz to test yourself about general knowledge in science.
At what temperature does water boil? What determines the boiling point of water? Here's the answer to this common question.
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.
If you're tired of bubbles that pop as soon as you blow them, try this recipe for unbreakable bubbles!
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.
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?
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.
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.
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.
Is it really possible to drink to much water? Learn about water intoxication and hyponatremia.
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.
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.
Learn how to remove fluoride from drinking water.
This is a classic recipe for homemade slime.
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.
This is an interactive periodic table or chart of the chemical elements. Click on an element symbol to get detailed information for each element.
Get step-by-step instructions for making classic slime.
Learn how to make a smoke bomb. This is the list of materials required for making your own smoke bomb.
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.
Get examples of 10 chemical changes.
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.
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.
Use these step by step instructions to write and balance chemical equations.
Apple seeds do contain a small amount of cyanide, which is a lethal poison, but humans are protected from it in several ways.
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.
Learn about the different types of chemical reactions and get examples of the reaction types.
This is a list of 10 examples of physical changes.
Find out what alum is and the uses of alum.
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.
Learn the one and two letter symbols for the chemical elements using this handy list.
Here is how to define anode and cathode and how to remember which is which.
Instructions for making your own chemical dip to polish silver.
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.
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.
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.
Sodium acetate, also known as 'hot ice' is an amazing chemical you can easily prepare yourself using baking soda and vinegar. You can cool a solution of sodium acetate below its melting point and then cause the liquid to crystallize. The crystallization is an exothermic process, so the resulting ice is hot. Solidification occurs so quickly you can form sculptures as you pour the hot ice.
This chart shows the colors of the typical 1970s mood ring and the meanings associated with the mood ring colors.
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.
Start learning chemistry with the basics. Learn what chemistry is, what chemists do, and why it's important to study chemistry.
Here's a look at some of the career options available to you in the field of chemistry.
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.
Learn about endothermic and exothermic chemical reactions and get instructions to perform your own hot and cold chemistry.
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.
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.
Basics of Acids and Bases Quiz - Test Your Chemistry Knowledge
Test your general science knowledge of 9th grade science with this fun online multiple choice quiz.
Test your 6th grade general science knowledge with this fun multiple choice quiz.
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.
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.
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.
Find out what chemical and physical changes are, get examples, and learn how to tell them apart.
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.
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.
Most elements are metals. This group includes the alkali metals, alkaline earth metals, transition metals, basic metals, and rare earth elements.
List of materials that glow under ultraviolet or black light.
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.
Do you think you have a basic understanding of chemistry? Take a multiple choice quiz to test yourself about general knowledge in chemistry.
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.
It's possible to make dry ice at home. Here are instructions and safety information on how to do it.
If you were a famous mad scientist, which mad scientist would you be? Take this fun multiple choice quiz to find out.
Make squishy non-toxic goo that hardens in your hands when you squeeze it, but flows like a liquid when you pour it.
Here is a look a what muriatic acid is, where you can find it, and the uses of muriatic acid.
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.
Here are some examples of physical changes and chemical changes, along with an explanation of how you can tell physical and chemical changes apart.
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.
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.
These are the strong acids. There are only six strong acids, so you might want to commit the list of strong acids to memory.
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.
Could you pass an 8th grade science quiz? Test your general science knowledge with this fun multiple choice quiz.
Make ice cream in a baggie to get a tasty treat while learning science.
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.
Learn how to make huge bubbles strong enough to pick up and examine.
Find out why you cry when you cut onions and how you can keep it from happening.
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.
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.
Here are the names and formulas of some of the common acids and bases.
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.
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.
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.
The difference between independent and dependent variables in a scientific experiment is which variable is being measured.
Here's an explanation of what STP is in chemistry and why it is useful, particularly when dealing with gases.
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.
Practice balancing chemical equations with this multiple choice quiz.
While you can buy treatments for mosquito bites, there are a lot of home remedies that can relieve the itching and sting without the expense.
Find out why babies are born with blue eyes.
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.
Test your periodic table knowledge with this fun multiple choice quiz.
There are seven elements that form diatomic molecules. This is a list of the seven diatomic elements.
Elements in the Human Body. Chemistry.
Holiday baking can be more of a challenge if you discover all your baking soda got used up for baking soda volcanoes and invisible ink. Here is how to substitute one baking chemical for another.
Learn the difference between Celsius and centrigrade temperature scales.
Learn about the different types of chemical bonds and the forces that affect the way electrons are shared.
Gas Constant (R) definition, as used in chemistry, chemical engineering, and physics.
Here are examples of a scientific hypothesis.
Atomic Structure Quiz - Test Your Chemistry Knowledge
Chemical Bonds & Compounds Chemistry Quiz: electron dot structures ionic covalent bonds lewis electron dot structures chemistry quiz chemistry quizzes
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.
Learn how to color fire using these fun and easy instructions.
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.
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.
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.
Review how to calculate pH and what pH means with respect to hydrogen ion concentration, acids, and bases.
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.
Learn about chemical composition of the Earth's air. Percentages of the most common compounds are given, according to volume.
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.
Have you ever wondered what farts are made of and whether they are the same for everyone? Here's a look at the chemical composition of farts.
These are step by step instructions for growing your own sugar crystals or rock candy.
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?
This is a table of electrical resistivity and electrical conductivity of several materials.
This alphabetical list of gemstones includes the mineral names of the gemstones as well as links to photos of the gems.
Learn to distinguish between ionic and covalent bonds, and determine whether a bond will be polar or nonpolar.
Cool off and amaze your friends by making any soft drink or soda turn into a slushy on command. Here's how to do this fun and refreshing supercooled science project.
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.
Here is a look at the three most electrically conductive elements. As you might expect, all three conductive elements are metals.
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.
Here's a look at whether or not it's safe to drink rain water, the risks, and ways to improve rain water quality to make it better to drink.
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.
Grow your own sparkling clear or colored borax crystal snowflakes.
It is easy to convert Celsius to Kelvin with these steps.
Learn what marijuana and THC are, why people use marijuana, where it comes from, and what risks are associated with using marijuana.
Learn how to distiguish between solutions, suspensions, colloids, and dispersions. Get examples of the different types of mixtures.
Mood rings have a stone that changes color depending on your emotions. Learn how mood rings work.
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.
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.
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 what rigor mortis is and why it happens.
Why do you add salt to boiling water? There are a couple of answers to this common cooking question. Here's a look at the reason for salting water.
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.
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.
Isotopes definition, as used in chemistry, chemical engineering, and physics.
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.
You can cool water below its stated freezing point and then crystallize it into ice on command. This is known as supercooling. These are step-by-step instructions for supercooling water at home.
Flammable and inflammable are two words that are commonly confusing. Learn what flammable and inflammable mean and whether they are synonyms or antonyms.
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 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.