Question

unit test: the structure of matter
read each question. circle the letter of the correct answer

1. which statement describes the particles in a gas?

a. gas particles are spaced far apart and move around freely.
b. gas particles are spaced far apart and move around slowly.
c. gas particles are loosely packed together and move past each other freely.

Explanation:

In the kinetic - molecular theory of gases, gas particles are far apart and move freely due to weak intermolecular forces and high kinetic energy.

Answer:

A. Gas particles are spaced far apart and move around freely.