3) The graph below represents the relationship between time and temperature as heat is added
at a constant rate to a sample of a substance.
Temperature
В.
Time
During interval AB which energy change occurs for the particles in this sample?
A)
The potential energy of the particles increases.
B)
The potential energy of the particles decreases.
C)
The average kinetic energy of the particles increases.
D)
The average kinetic energy of the particles decreases.