eSchool Today
E School Today: What Is Matter
Learn about matter, its three states, changes of state, how matter behaves, and physical and chemical changes in matter.
CK-12 Foundation
Ck 12: Fifth Grade: Physical Science: Physical and Chemical Changes in Matter
[Free Registration/Login may be required to access all resource tools.] Provides the definitions of physical and chemical changes in matter and gives examples. The law of conservation of mass is also described.