Consider the heating curve of h2o and line segments a, b, and c. several changes are taking place at a, b, and c. all but one would be an appropriate description as e move through segments a, b and then c.

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c) space between molecules decreases.
eliminate

a) temperature is increasing.

b) kinetic energy is increasing.

c) space between molecules decreases.
eliminate

d) molecular attraction is decreasing.