how is energy related to the change of state represented by the model?\natoms gain energy as a solid changes…

Brief Explanations:

When a substance changes from a more ordered state (like solid or liquid) to a less - ordered state (gas), atoms need more energy to move freely. Energy is absorbed during this process. In the case of changing from solid to gas (sublimation) or liquid to gas (vaporization), atoms gain energy. The model shows a change from a more closely - packed state to a more spread - out state, which indicates a gain of energy.

Answer:

Atoms gain energy as a solid changes to a gas; Atoms gain energy as a liquid changes to a gas