CK-12 Foundation
Ck 12: Properties of Matter
[Free Registration/Login may be required to access all resource tools.] In this learning module, students examine differences in physical and chemical properties of solids, liquids, and gases.
Frostburg State University
General Chemistry: Extensive and Intensive Properties
Provides information about extensive and intensive properties of matter. Gives examples of these properties. Includes a link to a quiz on classifying properties.