Question

What happens to molecules of water when water boils?

Energy is removed from water in the liquid state. As a result, water's molecules speed up,
the empty space between them stays the same, and water changes from a liquid to a gas.
This process is exothermic.
Energy is removed from water in the liquid state. As a result, water's molecules speed up,
the empty space between them decreases, and water changes from a liquid to a gas. This
process is endothermic.
Energy is added to water in the liquid state. As a result, water's molecules speed up, the
empty space between them increases, and water changes from a liquid to a gas. This
process is endothermic.
Energy is added to water in the liquid state. As a result, water's molecules speed up, the
space between them stays the same, and water changes from a liquid to a gas. This
process is exothermic.

Answer 1

Energy is added to water in the liquid state. As a result, water's molecules speed up, the empty space between them increases, and water changes from a liquid to a gas. This process is endothermic.

Step-by-step explanation:

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