Question detail

What is specific heat capacity and how is it defined in terms of energy transfer?

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

At a glance

Question

Type

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Style

Topic

Internal energy and energy transfers

Question

What is specific heat capacity and how is it defined in terms of energy transfer?

Answer

Specific heat capacity is defined as the amount of energy needed to raise the temperature of one kilogram of a substance by one degree Celsius. It quantifies how much energy a substance can store per unit mass for a given temperature change.

Explanation

Practical lens: Link apparatus, readings, and uncertainty to the exact measurement named in the objective. This question asks: What is specific heat capacity and how is it defined in terms of energy transfer. The correct response is Specific heat capacity is defined as the amount of energy needed to raise the temperature of one kilogram of a substance by one degree Celsius. It quantifies how much energy a substance can store per unit mass for a given temperature change., 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 define specific heat capacity as the energy needed to raise the temperature of one kilogram of a substance by one degree Celsius. 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 278 is distinct because it uses this exact question context and the practical lens rather than a generic particle-model sentence.

Common mistake

Confusing Specific Heat Capacity with Thermal Energy

Students often confuse specific heat capacity with the total thermal energy transferred, thinking they are the same concept.

Remember that specific heat capacity is the energy required to raise the temperature of one kilogram of a substance by one degree Celsius, while thermal energy is the total energy transferred in a process.

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What is specific heat capacity and how is it defined in terms | AQA Physics | ExamCompanion