Question detail

During a specific heat capacity experiment, if the mass of the substance is doubled while keeping the energy transferred constant, what happens to the temperature change (Temperature changes in a system and specific heat capacity)

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

At a glance

MCQ

Type

practice

Style

Topic

Internal energy and energy transfers

Question

  1. A. It doubles
  2. B. It halves
  3. C. It remains the same
  4. D. It quadruples

Answer

The correct answer is It halves.

Explanation

Unit lens: Check the units before giving the final statement so the physics quantity is not swapped. This question asks: During a specific heat capacity experiment, if the mass of the substance is doubled while keeping the energy transferred constant, what happens to the temperature change (Temperature changes in a system and specific heat capacity). The correct response is It halves, because specific heat capacity links energy, mass, material and temperature change. In Temperature changes in a system and specific heat capacity, the marking point should connect directly to interpret temperature-time data from a specific heat capacity experiment. 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 Internal energy and energy transfers, 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 349 is distinct because it uses this exact question context and the unit lens rather than a generic particle-model sentence.

Common mistake

Confusing temperature change with internal energy change

Students often think the temperature rise shown in a temperature‑time graph directly represents the total internal energy change of the system, ignoring that the graph only shows the average kinetic energy of the particles, not the potential energy component or the total internal energy.

Explain that the temperature‑time graph records only the change in average kinetic energy of the particles. The total internal energy change also includes any change in potential energy of the particles, which is not shown on the graph. Clarify that the graph is a visual representation of kinetic energy change, not the complete internal energy change.

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During a specific heat capacity experiment, if the mass of the | AQA Physics | ExamCompanion