Matter and Molecular Motion Matter and Molecular Motion Susan Schwartz DeWitt Clinton Elementary School 6110 N. Fairfield Ave. 6110 N. Fairfield Ave. Define the three states of matter and some of their properties. Demonstrate that air is matter and even though gases cannot always be seen, they take up space. Mass is the amount of matter in something.
All matter is made up of tiny particles.
Show students three jars each containing an example of one form of matter. Ask the students how they know whether something is a solid, liquid, or gas . List the students' responses on the board. Ask the students how they know there is air in the jar that appears empty. Demonstrate that air is matter and takes up space.