Question

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

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

Metal is heated from room temperature to 200°C.
Metal is heated from room temperature to 200°C.

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.
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Answer 1

Metal is heated from room temperature to 200°C.

Explanation: kinetic energy rises when temperature increases (heating). During melting the temperature (and thus average kinetic energy) stays constant while energy goes into changing potential (bond) energy.