Question detail

What is the specific latent heat of a substance ? P43-062 Changes of state and specific latent heat checkpoint

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. Energy needed to change state without temperature change ? P43-062 specific heat capacity reasoning
  2. B. P43-062 trap: this swaps specific heat capacity reasoning for a neighbouring particle-model idea.
  3. C. P43-062 trap: this omits interpret, heating, cooling from the explanation.
  4. D. P43-062 trap: this answer belongs outside Changes of state and specific latent heat.

Answer

The correct answer is Energy needed to change state without temperature change ? P43-062 specific heat capacity reasoning.

Explanation

Particle lens: Describe arrangement, motion, spacing, collisions, or energy changes only when they are relevant here. This question asks: What is the specific latent heat of a substance ?. The correct response is Energy needed to change state without temperature change ? P43-062 specific heat capacity reasoning, because changes of state are explained by particle energy and arrangement. In Changes of state and specific latent heat, the marking point should connect directly to interpret heating and cooling graphs that show temperature changes and flat sections during changes of state. 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 432 is distinct because it uses this exact question context and the particle lens rather than a generic particle-model sentence.

Common mistake

Misunderstanding Flat Sections

Students often misinterpret the flat sections of heating and cooling graphs as periods of no energy transfer.

Explain that during these flat sections, energy is being transferred to change the state of the substance, even though the temperature remains constant.

Related flashcards

Flashcard 1 of 5

Press Space to flip, arrows to move

Related practice questions

Question 1 of 5

Choose an answer, get feedback, then move sideways through the set.

0 of 4 attempted
What is the specific latent heat of a substance ? P43-062 | AQA Physics | ExamCompanion