Question

Which of the following correctly describes what happens to the kinetic energy of water when it changes from the solid state to the liquid state?please can some one help me with this question?

a.The kinetic energy of the molecules decreases.
b.The kinetic energy of the molecules increases then decreases.
c.The kinetic energy of the molecules increases.
d.There is no change in the kinetic energy of the molecules.

Answer 1

I think it's option d: no change in kinetic energy.

Answer 2

When water changes from ice to liquid, the heat is used to increase the kinetic energy of the particles of the water. This corresponds to the fact that liquids have more kinetic energy than solids, i.e., the particles of liquids can move more freely than the particles of solids.
So, c is the correct option. The kinetic energy of the molecules increases.

Hope it helps
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