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Introduction to Chemistry

Chemistry Mole

Do you wonder what chemistry is or why you would want to study it? Take a look at answers to some basic questions about chemistry.

Learn About Chemistry
Chemistry Spotlight10

How Do Mood Rings Work?

Mood rings have a stone that changes color depending on your emotions. Learn how mood rings work.

Is There a Pool Urine Detector or Pool Urine Indicator Dye?

Have you ever wondered whether there really is such a chemical as a pool urine detector or pool urine indicator dye? Such a dye supposedly clouds the water or produces a color when someone urinates in a swimming pool. Does a urine indicator really exist?

Compounds with Both Ionic and Covalent Bonds

Some compounds contain both ionic and covalent bonds. Here are examples of compounds that exhibit both types of chemical bonding.

How To Make Homemade Magic Sand

Use two common household materials to make homemade Magic Sand that doesn't get wet in water.

What Is Bleach and How Does It Work?

Learn about the different types of bleaches and how they work.

July 11 Science History

Learn about the history of science by reading about the significant scientific events that took place on this day in history.

Hot Ice or Sodium Acetate

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.

July 10 Science History

Learn about the history of science by reading about the significant scientific events that took place on this day in history.

Why Do Rings Turn Your Finger 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 Examples of Pure Substances?

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.

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