DP Biology (first assessment 2025)

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Question 23M.2.SL.TZ1.4bi

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Date May 2023 Marks available [Maximum mark: 2] Reference code 23M.2.SL.TZ1.4bi
Level SL Paper 2 Time zone TZ1
Command term Explain Question number i Adapted from N/A
i.
[Maximum mark: 2]
23M.2.SL.TZ1.4bi
(i)

With reference to the diagram, explain how water in sweat evaporates.

[2]

Markscheme
  1. heat increases molecular motion/vibration;
  2. (hydrogen) bonds break/bonds between water molecules break;
  3. water evaporation is separation of water molecules/water changes from liquid to gas/vapour;
  4. heat removed from skin surface/body;

 

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