Question

1. in which of the following three states of matter are the particles moving the fastest?

a. solid
b. liquid
c. gas
d. they are all moving the same

Explanation:

In the three states of matter (solid, liquid, gas), the kinetic energy of particles determines their movement speed. Gas particles have the highest kinetic energy among the three states. In solids, particles are closely packed and vibrate in fixed positions. In liquids, particles can slide past each other but have less freedom than gas particles. In gases, particles are far apart and move randomly at high speeds, colliding with each other and the container walls. So gas particles move the fastest.

Answer:

c. Gas