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Introduction to Chemistry

This girl is holding a flask of liquid.

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

July 24 Science History

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

Modeling Clay Recipes

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.

Dilutions from Stock Solutions

If you're working in a chemistry lab, it's essential to know how to calculate a dilution. Here's a review of how to prepare a dilution from a stock solution.

pOH Calculations

Sometimes you are asked to calculate pOH rather than pH. Here's a review of the pOH definition and an example calculation.

Solid Perfume Recipe

Solid perfume is easy to make, plus it's practical. Solid perfume won't spill. It doesn't contain alcohol, which makes this a good perfume project.

Solutions, Suspensions, Colloids, and Dispersions

Learn how to distiguish between solutions, suspensions, colloids, and dispersions. Get examples of the different types of mixtures.

July 23 Science History

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

How Does Febreze Work?

Does Febreze remove odors or merely mask them? Here's a look at how Febreze works, including information about its active ingredient, cyclodextrin, and how the product interacts with odors.

Supercooling Water

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.

What Is the Difference Between a Cation and an Anion?

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.

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