Question detail
How does energy transfer affect the potential energy of particles during a change of state (Changes of state and specific latent heat)
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
- A. It increases the average kinetic energy of the particles.
- B. It decreases the average kinetic energy of the particles.
- C. It changes the potential energy of the particles without affecting kinetic energy.
- D. It has no effect on the energy of the particles.
Answer
The correct answer is It changes the potential energy of the particles without affecting kinetic energy..
Explanation
Graph lens: Read the trend, flat section, gradient, or axis labels before explaining the physical meaning. This question asks: How does energy transfer affect the potential energy of particles during a change of state (Changes of state and specific latent heat). The correct response is It changes the potential energy of the particles without affecting kinetic energy., because specific latent heat concerns energy transferred during a state change with no temperature rise. In Changes of state and specific latent heat, the marking point should connect directly to apply MS 3b and MS 3c skills when rearranging and calculating with the specific latent heat equation. 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 447 is distinct because it uses this exact question context and the graph lens rather than a generic particle-model sentence.
Common mistake
Confusing Specific Latent Heat with Temperature Change
Students often confuse specific latent heat with temperature change, thinking that energy transferred during a state change affects temperature.
Remember that specific latent heat refers to the energy needed to change the state of a substance without changing its temperature. Focus on how energy affects particle arrangement rather than kinetic energy.
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