Question
During cooling, the kinetic energy of the molecules falls. Why does this happen?
A.
because the motion of the molecules increases
B.
because the motion of the molecules slows down
C.
because the Van der Waals forces between molecules decrease
D.
because the forces of attraction between the molecules are overcome
A.
because the motion of the molecules increases
B.
because the motion of the molecules slows down
C.
because the Van der Waals forces between molecules decrease
D.
because the forces of attraction between the molecules are overcome
Answers
GPT-4o mini
The correct answer is:
**B. because the motion of the molecules slows down**
When a substance cools, the kinetic energy of its molecules decreases, leading to a reduction in their motion. As the temperature of a substance decreases, the average speed of the molecules is reduced, resulting in lower kinetic energy.
**B. because the motion of the molecules slows down**
When a substance cools, the kinetic energy of its molecules decreases, leading to a reduction in their motion. As the temperature of a substance decreases, the average speed of the molecules is reduced, resulting in lower kinetic energy.