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An increase in the motion of molecules of a gas confined in a metal tank will be observed as an increase in:

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Correct Answer: D. both the temperature and pressure of the gas.
The word “kinetic” means movement or motion. An increase in motion means that there is an increase in kinetic energy which we know is directly related to temperature (CHM 4.1.2). When there is an increase in motion, that means there is an increase in the force of the molecules hitting the walls of the container. Pressure is force per unit area (PHY 6.1.2) so the pressure must increase if the motion increases.
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