Question

A truck was carrying a substance in a tank. The molecules of that substance were moving away from each other. The truck parked overnight in a place where energy transferred out of the substance. In the morning, the substance was a gas. How were the molecules moving in the morning? Explain why the molecules were moving that way after energy was transferred out of them.

Answer 1

The molecules will move closer to each other. They will contract.

Explanation:

When there is energy in the particles, they will move move apart from each other. The will be far apart from each other and mostly the state of the matter will expand. It will be from solid to liquid to gas.

But when the energy is removed from the substance, the particles will move closer to each other. They will contract. The state of matter will contract from gas to liquid to gas.