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MYP Physics · 07 · multiple choice

Heating during a change of state

Thermal physics · Original GioPhysics question with a detailed, mark-by-mark answer guide.

Demand
recall
Marks
3
Topics
2
Answer
Complete
multiple choice3 marks

Pure ice at its melting temperature is heated steadily. Some ice melts, but the temperature remains constant. Which statement best explains the observation?

Choose your answer
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  1. a

    Select and explain Select the best explanation and distinguish internal energy from temperature.

    3 marks
Ready to self-mark?Reveal the detailed answer guide
Answer overviewCorrect answer: B — Energy increases particle potential energy as the solid structure changes.
01

a

3 marks

Select and explain Select the best explanation and distinguish internal energy from temperature.

How to approach it

Predict from the governing principle before looking for a matching option. Then reject alternatives by checking direction, units, limiting behaviour or the physical meaning of each statement.

  1. 1

    Selects option B: melting increases particle potential energy while the structure changes.

  2. 2

    Explains that energy is transferred into the ice even though temperature is constant.

  3. 3

    Explains that the energy changes particle arrangement or potential energy rather than increasing average kinetic energy during melting.

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