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

Join a group of middle-school students on a visit to a laboratory at the Massachusetts Institute of Technology, where they experiment with "mystery mud" and learn about the relationships between magnetism, particle motion, and changes in...

Can the world become a kinder place? The Random Acts of Kindness Foundation has a multitude of ideas for changing the world one step at a time. Authors list 100 "Ideas for Kindness" that range from "Give the Gift of your Smile" to "Host...

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

This resource provides a physical reaction. Hydrous and anhydrous calcium chloride react with water to produce physical exothermic and endothermic reactions.

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...

This site has information about the settlement patterns of the Native People of California based on the location and availability of resources.