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Introduction to Chemistry

An atom consists of a nucleus of protons and neutrons surrounded by a cloud of moving electrons.

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.

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Chemistry Spotlight10

How to Remove Ball Point Pen Ink

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.

July 31 Science History

Learn about the history of science by reading about the significant scientific events that took place on July 31 in history.

What Is the Difference Between Flammable and Inflammable?

Flammable and inflammable are two words that are commonly confusing. Learn what flammable and inflammable mean and whether they are synonyms or antonyms.

What Is Denatured Alcohol?

This is an explanation of what denatured alcohol is and the ingredients in it.

Rules for Assigning Oxidation Numbers

Learn how to assign oxidation numbers to keep track of the distribution of electrons during a chemical reaction.

July 29 Science History

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

July 30 Science History

Learn about the history of science by reading about the significant scientific events that took place on July 30 in history.

How To Grow Bismuth Crystals

Bismuth is one of the easiest and prettiest metal crystals that you can grow yourself. The crystals have an interesting geometric hopper form and are rainbow-colored from the oxide layer that quickly forms on them. Try these step-by-step instructions for growing bismuth crystals.

What Is Mylar?

You may be familiar with Mylar in shiny helium-filled balloons, solar filters, space blankets, protective plastic coatings or insulators. Here's a look at what Mylar is made of and how it is made.

Turn Water into Liquid Gold

Mix two clear solutions, wait, and watch the liquid turn to gold! This is a simple alchemy project or chemistry demonstration, based on early attempts to make gold from base metals.

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