When a sample of gas is cooled, the particles of gas ________.

Responses
A slow down
B speed up

A slow down

When a sample of gas is cooled, the particles of gas option A: slow down.

Explanation:
When a gas is cooled, its temperature decreases. Temperature is a measure of the average kinetic energy of the gas particles. With a decrease in temperature, the particles have lower average kinetic energy. This means that the particles move slower than before. So, when a gas is cooled, the particles of the gas slow down.

To find the answer to this question without using this explanation, you could also use your background knowledge or refer to a reliable source such as a physics textbook or reputable website that explains the behavior of gases when cooled.