What happens as a liquid freezes?
o
a. the average kinetic energy decreases.
o
b. heat energy is absorbed.
o
c. heat energy is released.
o
d. the average kinetic energy increases.

A

Explanation:

When molecules speed up, they become excited and create friction that is transformed into heat, do when an abject cools, the molecules slow down and thus for have less friction.

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answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.