This site explores what catalysts and inhibitors are, as well as what they do. Additional content includes a focus on Lisa Meitner and her contribution radiochemistry.

Chem4Kids! looks at careers available in the large field of chemistry. Here you can explore the career of a doctor, pharmacist or pharmacologist, university researcher, forensics expert, or hazardous materials expert.

The 17th element in the periodic table is defined, chlorine. Find out how many electrons chlorine has and where you can find it in nature and in the home.

This Chem4Kids.com site explains what equilibrium is in easy-to-understand language. Content includes a great example, as well as exploring different things which effect the position of equilibrium.

Here you can find some great information about the 9th element in the periodic table, "fluorine." Content focuses on fluorine's electrons, where you can find fluorine in nature and in the home, and how fluorine combines with other elements.

This Chem4Kids site provides a nice description of the Halogen group. Content focuses on what makes them alike and what Halides are.

Here you can find lots of great information about helium. Learn about its electrons, where it exists in nature, and about the element itself!

Here you can find out about hydrogen, the first element in the periodic table. Content includes shell information, where to find it in nature, and why it is helpful to us.

Here at Chem4Kids you can learn all about ions. Content explores what an ion is, its various characteristics, electrovalence, and more.

This overview of isotopes explores where isotopes come from and returning an atom to its normal state.

This Chem4Kids site provides a general overview of the lanthanide and actinide series.

This overview of lipids explores triglycerides, saturated and unsaturated fat, steroids, waxes, and the role of lipids in energy.

This overview of liquids explores what a liquid is and how matter becomes changes into a liquid.

Here you can find some great information about the 12th element in the periodic table, "magnesium." Content focuses on magnesium's electrons, where you can find magnesium in nature and in the home, and how magnesium combines with other elements.

"Matter is everything." So begins this comprehensive website on the physical and chemical properties of matter in its four main states: solids, liquids, gases, and plasmas. The text is large and easy-to-read. Students will enjoy the downloads, activities, and quizzes at this site.

This site provides a general overview of the metals in the periodic table. Content explores the different types of metals, and how you can identify a metal.

This informative site contains basic information, offered in a straightforward way, on what constitutes a mixture. Examples and illustrations are part of this site.

Here you can find some great information about the 10th element in the periodic table, "neon." Content focuses on neon's electrons, where you can find neon in nature and in the home, and how neon combines with other elements.

Here you can find some great information about the 7th element in the periodic table, "nitrogen." Content focuses on nitrogen's electrons, where you can find nitrogen in nature and in the home, and how nitrogen combines with other elements.

Chem4Kids! looks at nucleic acids and its "five easy parts": uracil, cytosine, thymine, adenine, and guanine.