Changes of State Answers

Which statement best describes the energy changes associated with evaporation and boiling?

A cylinder at left has balls stacked near its bottom with an arrow leading to a cylinder at right with balls evenly spaced throughout the cylinder.

The diagram shows changes of state between solid, liquid, and gas. The atoms of a substance lose energy during a change of state. Before the change, the atoms are close together but are able to slide past one another.

As atoms gain energy, they move faster and slide past one another more easily. Atoms at the surface of the substance overcome attractions to nearby atoms and break free of the surface.

During which changes of state do atoms overcome the attractive forces between them?

Brian made this table to organize his notes on changes of state.Which change of state has the wrong energy change listed?

What happens during evaporation?

A cylinder at left with balls evenly spaced throughout the cylinder with an arrow leading to a cylinder at right with balls stacked near the bottom of the cylinder.

During which change of state would the volume of a substance increase the most?

What happens if atoms lose energy during a change of state?