Question 2 • 25-26 CHEMISTRY IN THE EARTH SYSTEM S1
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?
Answer
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.