Resource provides the ten signs that tell when a chemical change has occured. Each sign has a detailed explanation.

Online textbook reviews fundamentals of chemistry and physical science via slideshow presentations, notes, and videos. Materials for classroom activities engage students in inquiry-based, hands-on investigations covering molecular...

Online textbook reviews fundamentals of chemistry and physical science via slideshow presentations, notes, and videos. Materials for classroom activities engage students in inquiry-based, hands-on investigations covering molecular...

Identify chemical and physical changes and the differences between the two.

A series of interactive applets use scientific models to teach some basic concepts of matter, including states of matter and physical and chemical changes.

Learn to identify changes in matter and explain what happens as matter changes. The lesson is supplemented with several experiments to reinforce key concepts.

Greenpeace offers an in-depth look at climate change (or global warming). Content includes a look at the cause of climate change, the scientific evidence that supports it, the problems that occur during climate change, foreboding...

A virtual experiment bringing you to the center of combustion! Understand how fire ignites, what makes a flame, and how molecules rearrange themselves in chemical reactions. This interactive activity gives students four different...

With an overview of topics related to chemical equilibrium, this site provides a foundation to a study of thermodynamics and spontaneous change. Other topics covered include entropy, spontaneous macroscopic change, and more.

Kids learn about the changes in modern warfare that occurred during World War I including airplanes, bombers, tanks, trench warfare, submarines, machine guns, and chemical weapons.

Our understanding about the air we breathe has changed dramatically through time. This illustrated timeline from the NOVA Web site tracks the changing thought on air and the creation of the Periodic Table of the Elements.

An entire site of resources specifically for environmental science and how it is linked to human health. Topics include water pollution, air pollution, climate change, and chemicals.

The molecular basis of indicator color changes. Includes Chime structures for the acid and base forms of phenolphthalein, methyl orange, red cabbage indicator, and cyanidin diglucoside.

Sixteen program clips of various kitchen chemistry topics. See chefs at work carrying out edible chemistry experiments.

A scientific approach to kitchen skills takes a look at the chemistry involved in preparing the food we eat.

Search from over two thousand chemistry resources for students. Options allow user to refine search to pinpoint the exact resource needed. Includes presentations, videos, worksheets, quizzes, experiments, games, tutorials, and more.

Search from over two thousand chemistry resources for teachers. Options allow user to refine search to pinpoint the exact resource needed. Includes presentations, videos, worksheets, quizzes, experiments, games, tutorials, and more.

Site keeps up-to-date news on the Bhopal disaster in 1984. There is a video and a survivor's account of that night. Photos include the factory as it looked in 2003.