Question

The temperature of a sample of liquid water changes from 50°C to 30°C. Which statement best explains the change that must

happen at the molecular level?
A)The molecules move more quickly and their average kinetic energy increases
B)The molecules move more slowly and their average kinetic energy decreases
C)The molecules move more quickly and their average kinetic energy decreases
D)The molecules move more slowly and their average kinetic energy increases

Answer 1

The statement which best explains the change that must happen at the molecular level is below:

Step-by-step explanation:

The molecules move more slowly and their average kinetic energy decreases

Answer 2

B: The molecules move more slowly and their average kinetic energy decreases.

Step-by-step explanation:

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