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2.2.3a Melting, boiling, condensation and solidification

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Question 207

A puddle of water evaporates, causing the remaining liquid to cool.

Which statement correctly explains this cooling effect?

A

The molecules with the least kinetic energy escape the liquid, increasing the average energy of those left behind.

B

The molecules with the greatest kinetic energy escape the liquid, decreasing the average kinetic energy of those left behind.

C

Molecules lose kinetic energy as they collide with air molecules above the surface, reducing the temperature of the liquid.

D

The liquid undergoes a chemical reaction with the air, absorbing thermal energy from the puddle.

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2.2.3a Melting, boiling, condensation and solidification Questions

  1. IGCSE
  2. /Physics
  3. /2.2.3a Melting, boiling, condensation and solidification

313 exam-style questions on CIE IGCSE Physics 2.2.3a Melting, boiling, condensation and solidification. Each one has a worked solution and a mark scheme showing where the marks go.

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