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Learning objective

Recognize that evaporation leads to a decrease in the temperature of a liquid.

Read the explanation, check the common trap, then practise with flashcards and questions.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE Combined ScienceThermal physicsCore content

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Quick explanation

Recognize that evaporation leads to a decrease in the temperature of a liquid

  • This point belongs to Thermal properties and temperature, especially Thermal properties and temperature outcomes.
  • You need to be able to recognize that evaporation leads to a decrease in the temperature of a liquid.
  • The key ideas to know are State.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

State

Why it matters

This objective helps connect Thermal properties and temperature outcomes to exam-style questions, flashcards, and revision notes for Thermal properties and temperature.

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Paper 3 structured question: Thermal properties and temperature

Paper 3Theory (Core)2 marks

Description

Cooling Effect of Evaporation

When sweat evaporates from the skin, it cools the body down. This is because the molecules with the highest energy escape into the air, leaving behind cooler molecules.

  1. a

    Explain how evaporation leads to a decrease in temperature of a liquid.

    Aim for approximately 2 distinct marking points.

    [2]
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