What happens to molecular energy(heat) in water when water vapor becomes a liquid? 1) Water vapor gives up heat energy.
2) Water vapor retains the same heat energy.
3) Water vapor absorbs heat energy.
4) As water's mass increases it absorbs energy.

1 is your answer i believe

Explanation:

As the molecules lose heat, they lose energy and slow down. They move closer to other gas molecules. Finally these molecules collect together to form a liquid.

the match duh

explanation:

i'm thinking (a) to keep sand in place; ////////////

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