Question

The average kinetic energy of the particles of a substance _____.

A.is equal to the total energy absorbed by the substance
B. increases as the temperature of the substance is lowered
C. is directly proportional to the temperature of the substance
D. is not affected by the temperature of the substance

Answer 1

Answer:

C

Explanation:

The higher the temperatures the higher the kinetic energy of the particles. This is because the particles move more rapidly and faster with increased temperatures. This is why the more you heat a substance it changes phases as it molecules/particles move more rapidly and collide with more force.

Answer 2

The average kinetic energy of the particles of a substance is directly proportional to the temperature of the substance (Option C).

• Kinetic energy refers to the form of energy of an object due to its motion (movement).

• Kinetic energy is directly proportional to the motion of its constituent particles, which depends on the temperature (higher temperature higher motion).

• Conversely, potential energy refers to the energy stored by an object because of its position with regard to other objects.

• Kinetic energy cannot be negative, but potential energy can be negative.

In conclusion, the average kinetic energy of the particles of a substance is directly proportional to the temperature of the substance (Option C).

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