Directions: Kinetic Molecular Theory can explain the properties of gases. Match the
property with the possible explanation. Write the letter of the correct
answer on a separate sheet of paper.
Property
1. Gases have no definite shape.
The volume of a gas is equal
to the volume of the
container confining it.
2. Gases have a very low
density.
3. Gases have a very high
compressibility.
4. Gases exert pressure equally
in all directions on the walls
of their container.
5. Gases mix thoroughly and
spontaneously with one
another. Gases easily diffuse.
Explanation
a. Because the molecules are so
small and far apart, they can
easily be pushed together.
b. Since the rapidly moving
molecules are far apart, there is
an ample room for moving.
c. The particles are moving rapidly
in all directions. There is very
little force of attraction between
the molecules. They can move
freely to fill the containers.
d. The molecules are moving rapidly
in all directions. They collide with
each other and on the sides of the
container. Pressure is a result of
these collisions.
e. Particles are widely separated, so
there are relatively few of them in
a given volume.