[Free Registration/Login may be required to access all resource tools.] Discusses elements, atoms, compounds, molecules, and crystals. Looks at mixture and different types of them.

Students will be able to describe elements and compounds, and explain how mixtures differ from compounds.

This resource aims to promote the use and application of chlorine in a responsible manner. Tends to focus on the many positive applications and downplay and health risks associated with some chlorine compounds, but a good source of...

An essential element in the ecosystem is phosphorus. Discover the phosphorus cycle, what depends upon it, and how it works.

[Free Registration/Login may be required to access all resource tools.] Group 3-12 elements and their properties.

Find out the basic characteristics and main properties of all matter.

In this activity, students construct models of molecules using marshmallows and gum drops.

[Free Registration/Login Required] Explore the composition of air and learn about the different atoms and molecules that we breathe every day.

A summary of the uses and characteristics for the chemical element Cerium.

Ten detailed comma rules are found on this page.

Students can use this chemistry tutorial to help them understand how to name chemical formulas.

[Free Registration/Login may be required to access all resource tools.] Explains the law of multiple proportions.

Very detailed information on the chemical element Nickel. Discusses its uses, physical properties, and the potential effects of exposure.

This organic chemistry tutorial describes the general class of nitrogen functional group compounds (amines and amides).

A laboratory experiment where students classify matter into a homogenous mixture, heterogeneous mixture, solution, or pure substance. Also students will test for physical and chemical changes.

Through this reading, students will learn that a substance's properties arise from its molecular structure, not from how it's made (i.e., synthesized by people or found in nature). There is no fundamental difference between natural and...

This reading is an introduction to the great variety of steroids and their many different uses.

[Free Registration/Login may be required to access all resource tools.] Describes the significance of carbon to life on Earth.

In this lesson plan, students are introduced to the 5 major types of chemical reactions. Each reaction type will be analyzed and specific examples will be noted. Students will then perform a lab investigation which includes each of the...

Kids learn about organic chemistry including the importance of carbon, organic molecules, compounds, hydrocarbons, synthesis, and functional groups.

This site shows how to repair run-on sentences. Students and teachers will find this interactive resource helpful.

This site from the Encyclopedia Wikipedia provides the definition of the term, "Alloy," and then offers hyperlinks to special alloys. The information is very brief, but factual, and worth checking out on the subject.

[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will learn to calculate the percent composition of a compound either from mass data or from the chemical formula. They will use...

The element lead is a neurotoxin that is particularly dangerous to young children. Among other uses, lead compounds were common paint additives until being phased out for safer titanium-based additives beginning in the 1960's. Lead...