Question detail
Which of the following statements is true regarding temperature and internal energy (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. Temperature is the total energy of all particles.
- B. Internal energy is the average kinetic energy of particles.
- C. Temperature measures the average kinetic energy of particles.
- D. Internal energy does not change with temperature.
Answer
The correct answer is Temperature measures the average kinetic energy of particles..
Explanation
Particle lens: Describe arrangement, motion, spacing, collisions, or energy changes only when they are relevant here. This question asks: Which of the following statements is true regarding temperature and internal energy (Changes of state and specific latent heat). The correct response is Temperature measures the average kinetic energy of particles., 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 explain why temperature remains constant during a change of state even though energy is transferred. 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 420 is distinct because it uses this exact question context and the particle lens rather than a generic particle-model sentence.
Common mistake
Confusing Temperature with Internal Energy
Students often think that temperature and internal energy are the same, leading to incorrect explanations about energy transfer during state changes.
Emphasize that temperature measures the average kinetic energy of particles, while internal energy includes both kinetic and potential energy. Clarify that energy transfer can occur without a change in temperature during state changes.
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