a truck was carrying a substance that was a gas in a tank. the molecules in that substance were moving away…

a truck was carrying a substance that was a gas in a tank. the molecules in that substance were moving away from each other at that time. the truck parked overnight in a place where energy transferred out of the substance. in the morning, the substance was a liquid. how were the molecules moving in the morning? explain why the molecules were moving that way after energy was transferred out of them. (in your answer discuss what is happening with kinetic heat energy, how the movement of molecules changes and what exactly caused the phase change.)

a truck was carrying a substance that was a gas in a tank. the molecules in that substance were moving away from each other at that time. the truck parked overnight in a place where energy transferred out of the substance. in the morning, the substance was a liquid. how were the molecules moving in the morning? explain why the molecules were moving that way after energy was transferred out of them. (in your answer discuss what is happening with kinetic heat energy, how the movement of molecules changes and what exactly caused the phase change.)

Answer

Explanation:

Step1: Understand energy - phase relationship

When energy is transferred out of a gas, its kinetic energy decreases.

Step2: Analyze molecular motion change

As kinetic energy decreases, the motion of molecules slows down. In a gas, molecules move freely and away from each other. When energy is removed and it becomes a liquid, the intermolecular forces start to have a more significant effect. Molecules are still in motion but are more closely packed and move past each other rather than moving away from each other as in a gas.

Step3: Identify cause of phase - change

The transfer of energy out of the substance reduced the kinetic heat energy of the molecules. This reduction in kinetic energy meant that the molecules no longer had enough energy to overcome the intermolecular forces completely, causing the substance to change from a gas (where molecules are far apart and move freely) to a liquid (where molecules are closer together and can slide past one another).

Answer:

In the morning, the molecules in the substance (now a liquid) were moving past each other. This is because when energy was transferred out of the gas - phase substance, the kinetic heat energy of the molecules decreased. As a result, the molecules slowed down and the intermolecular forces became strong enough to pull the molecules closer together, causing the phase change from gas to liquid.