Question

Which statement about gases is true?

A) They are made up of particles that always move very slowly.
B) They are made up of particles that travel in a curved path when in motion.
C) They are made up of hard spheres that vibrate quickly in stationary positions.
D) They are made up of hard spheres that are in random motion.

Answer 1

B) They are made up of particles that travel in a curved path when in motion.

Step-by-step explanation:

We know that gas, being a state of matter, is made up of particles. John Dalton's solid-sphere model was proven to be incorrect by Ernest Rutherford's gold foil experiment.

These particles do NOT always move very slowly. There are multiple different factors that affect the speed of the particles such as temperature or concentration.