Question detail

When a gas is compressed quickly, what is likely to happen to its temperature (Increasing the pressure of a gas (physics only) (HT only))

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. It decreases
  2. B. It remains constant
  3. C. It increases
  4. D. It fluctuates

Answer

The correct answer is It increases.

Explanation

Unit lens: Check the units before giving the final statement so the physics quantity is not swapped. This question asks: When a gas is compressed quickly, what is likely to happen to its temperature (Increasing the pressure of a gas (physics only) (HT only)). The correct response is It 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) Apply conservation of energy reasoning to work done on a 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 637 is distinct because it uses this exact question context and the unit lens rather than a generic particle-model sentence.

Common mistake

Misunderstanding Work Done

Students often confuse work done on a gas with the energy transferred to the gas, failing to apply conservation of energy reasoning correctly.

To fix this, students should focus on how work done on the gas increases its internal energy, and understand that this energy transfer is a key part of the conservation of energy principle.

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