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

Learn about matter, its three states, changes of state, how matter behaves, and physical and chemical changes in matter.

Discover the concept that energy transfer and molecular motion cause the change in state from a solid to a liquid. Also compare state changes of water to the state changes of other substances.

This interactive allows you to explore the effect that temperature and pressure have on the changes in the states of matter. You can test these variables on carbon dioxide, hydrogen and water.

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.

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

Second graders explore the concept of law of conservation of mass.

Students investigate how low temperature causes water vapor to condense into a liquid and then freeze to form a solid.

Read and fill in the blanks of this passage properties and changes. Each blank has a dropdown menu with choices. When you finish, click CHECK MY ANSWERS. If you pick a wrong answer, the right answer will be displayed along with your choice.

This site provides a lesson plan using candy making to demonstrate physical and chemical changes in matter. Includes directions to make caramel and rock candy.