Question detail

How does compressing a gas quickly affect its temperature?

Try the question, check the answer, then read the explanation to understand the curriculum point.

At a glance

MCQ

Type

practice

Style

Topic

Particle model and pressure

Question

  1. A. The temperature decreases
  2. B. The temperature remains constant
  3. C. The temperature increases
  4. D. The temperature fluctuates

Answer

The correct answer is The temperature increases.

Explanation

Exam lens: Write the relationship, substitute values only when needed, and finish by interpreting the result. This question asks: How does compressing a gas quickly affect its temperature. The correct response is The temperature increases, because gas pressure comes from particle collisions with container walls. In Increasing the pressure of a gas (physics only) (HT only), the marking point should connect directly to (Physics only) (HT only) Explain that doing work on a gas transfers energy to the gas. If the question includes values, the working must keep the appropriate unit and operation; if it is an explanation, it must name the relevant particle behaviour or energy change. This item belongs to Particle model and pressure, so avoid answers that switch to a different quantity, confuse heat with temperature, or describe gas pressure without collisions when collisions are the reason. Checkpoint 587 is distinct because it uses this exact question context and the exam lens rather than a generic particle-model sentence.

Common mistake

Misunderstanding Work Done on Gases

Students often confuse the concept of work done on a gas with the energy transferred to the gas, thinking they are the same.

Clarify that doing work on a gas specifically refers to the energy transferred to the gas, which can increase its internal energy and temperature.

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