Question

A student places a skillet on a stove. After heating for 10 minutes, the student removes the skillet from stove. Which describes the kinetic energy of the molecules in the skillet during the investigation?



a
The kinetic energy increases and then decreases.
b
The kinetic energy decreases and then increases.
c
The kinetic energy remains the same.
d
The kinetic energy constantly increases.

Answer 1

a

While on the stove the skillet gains thermal energy so the average kinetic energy of its molecules increases; once removed it loses heat to the surroundings so their kinetic energy decreases.