Evaporation of a liquid into a gas is a physical change. This means there's no change in the composition of the compound in the gaseous state, and the molecules will look the same in both the liquid and gaseous state.
Recall that gases have more empty space between their molecules than liquids.
The first diagram depicts a compound in its liquid state.
Which of the other diagrams best depicts the compound after it has evaporated into a gas?
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