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 whether you are scientifically literate.
Take a multiple choice quiz to test yourself about general knowledge in chemistry.
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.
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.
Learn about natural ways to repel mosquitoes and develop strategies to reduce your exposure to them.
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.
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.
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.
Atom Basics Quiz - Test Your Chemistry Knowledge: structure quiz chemistry knowledge model of the atom question quiz science fundamentals
Take a multiple choice quiz to test yourself about general knowledge in science.
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.
At what temperature does water boil? What determines the boiling point of water? Here's the answer to this common question.
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.
Is it really possible to drink to much water? Learn about water intoxication and hyponatremia.
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.
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.
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.
Get examples of 10 chemical changes.
Learn how to make a smoke bomb. This is the list of materials required for making your own smoke bomb.
This is a list of 10 examples of physical changes.
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.
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.
This is an interactive periodic table or chart of the chemical elements. Click on an element symbol to get detailed information for each element.
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.
Learn how to remove fluoride from drinking water.
Get step-by-step instructions for making classic slime.
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.
Apple seeds do contain a small amount of cyanide, which is a lethal poison, but humans are protected from it in several ways.
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?
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.
Use these step by step instructions to write and balance chemical equations.
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.
This is a classic recipe for homemade slime.
Learn about the different types of chemical reactions and get examples of the reaction types.
Find out what alum is and the uses of alum.
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.
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.
Learn the one and two letter symbols for the chemical elements using this handy list.
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.
Instructions for making your own chemical dip to polish silver.
Here is how to define anode and cathode and how to remember which is which.
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.
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.
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.
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.
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.
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.
This chart shows the colors of the typical 1970s mood ring and the meanings associated with the mood ring colors.
Most elements are metals. This group includes the alkali metals, alkaline earth metals, transition metals, basic metals, and rare earth elements.
Basics of Acids and Bases Quiz - Test Your Chemistry Knowledge
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.
Test your 6th grade general science knowledge with this fun multiple choice quiz.
Here are some examples of physical changes and chemical changes, along with an explanation of how you can tell physical and chemical changes apart.
Find out what chemical and physical changes are, get examples, and learn how to tell them apart.
If you were a famous mad scientist, which mad scientist would you be? Take this fun multiple choice quiz to find out.
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.
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.
Test your general science knowledge of 9th grade science with this fun online multiple choice quiz.
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.
Here's a look at some of the career options available to you in the field of chemistry.
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 about endothermic and exothermic chemical reactions and get instructions to perform your own hot and cold chemistry.
Make squishy non-toxic goo that hardens in your hands when you squeeze it, but flows like a liquid when you pour it.
It's possible to make dry ice at home. Here are instructions and safety information on how to do 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.
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.
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.
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.
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.
List of materials that glow under ultraviolet or black light.
Here is a look a what muriatic acid is, where you can find it, and the uses of muriatic acid.
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.
Do you think you have a basic understanding of chemistry? Take a multiple choice quiz to test yourself about general knowledge in chemistry.
These are the strong acids. There are only six strong acids, so you might want to commit the list of strong acids to memory.
Practice balancing chemical equations with this multiple choice quiz.
Atomic Structure Quiz - Test Your Chemistry Knowledge
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.
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.
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.
Could you pass an 8th grade science quiz? Test your general science knowledge with this fun multiple choice quiz.
Find out why you cry when you cut onions and how you can keep it from happening.
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.
Learn how to make huge bubbles strong enough to pick up and examine.
Elements in the Human Body. Chemistry.
Here are the names and formulas of some of the common acids and bases.
The difference between independent and dependent variables in a scientific experiment is which variable is being measured.
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.
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.
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.
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.
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.
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.
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.
Learn about the different types of chemical bonds and the forces that affect the way electrons are shared.
Make ice cream in a baggie to get a tasty treat while learning science.
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.
Here are examples of a scientific hypothesis.
Take a multiple choice quiz to test yourself about the symbols for the first 20 elements.
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.
Review how to calculate pH and what pH means with respect to hydrogen ion concentration, acids, and bases.
Chemical Bonds & Compounds Chemistry Quiz: electron dot structures ionic covalent bonds lewis electron dot structures chemistry quiz chemistry quizzes
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.
This alphabetical list of gemstones includes the mineral names of the gemstones as well as links to photos of the gems.
Learn the difference between Celsius and centrigrade temperature scales.
Here's an explanation of what STP is in chemistry and why it is useful, particularly when dealing with gases.
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.
Find out why babies are born with blue eyes.
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.
Gas Constant (R) definition, as used in chemistry, chemical engineering, and physics.
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.
Learn about chemical composition of the Earth's air. Percentages of the most common compounds are given, according to volume.
Isotopes definition, as used in chemistry, chemical engineering, and physics.
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.
Learn how to distiguish between solutions, suspensions, colloids, and dispersions. Get examples of the different types of mixtures.
Learn how to color fire using these fun and easy instructions.
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.
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.
Get examples of types of solids, liquids, and gases and learn about the transitions or phase changes between them.
There are seven elements that form diatomic molecules. This is a list of the seven diatomic elements.
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.
Chemistry of hard and soft water, with information about soaps, detergents, and water softening agents.
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.
Test your periodic table knowledge with this fun multiple choice quiz.
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.
Mood rings have a stone that changes color depending on your emotions. Learn how mood rings work.
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.
These are step by step instructions for growing your own sugar crystals or rock candy.
Learn what marijuana and THC are, why people use marijuana, where it comes from, and what risks are associated with using marijuana.
This is a table of electrical resistivity and electrical conductivity of several materials.
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?
You can use science to perform magic tricks and enhance any magic show. These tricks are great for use as science projects or just for fun.
Here is a list of ten common acids with chemical structures.
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.
Here is a look at what the molecular formula and empirical formula are and steps for finding the molecular formula and empirical formula.
Strong bases are bases which completely dissociate in water. Here is a list of the most common strong bases.
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.
Have you ever wondered if alum is safe to eat or safe to use as an underarm deodorant? Here's a look at what alum is and whether it's safe.
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.
Learn to distinguish between ionic and covalent bonds, and determine whether a bond will be polar or nonpolar.
It is easy to convert Celsius to Kelvin with these steps.
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.
Learn about what an acid-base indicator is and choose an acid-base indicator from this comprehensive table of acid-base indicators, based on pH range or color change.
Learn about the concepts of radioactivity and radiation.