Question

In which case would the kinetic energy of particles be increasing? (1 point)
Responses

Metal is cooled at 1,300°C.
Metal is cooled at 1,300°C.

Metal is melted at 1,300°C.
Metal is melted at 1,300°C.

Metal is at room temperature, 37°C.
Metal is at room temperature, 37°C.

Metal is heated from room temperature to 200°C.

Answer 1

Metal is heated from room temperature to 200°C.

Explanation: heating raises the temperature, which increases the average kinetic energy of particles. Cooling lowers kinetic energy, and melting at the melting point adds latent (potential) energy while temperature (and thus average kinetic energy) stays essentially constant.