The diagram shows a state of matter in a closed system before and after undergoing a change. System before change
System after change
Svo
Which statement best explains the change in the system?
Particle motion decreases when thermal energy is added to the system.
A
B
Particle motion increases when solid particles are added to the system.
С
Particle motion increases when thermal energy is added to the system.
D
Particle motion decreases when gas particles are added to the system.