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Paper 3Theory (Core)2 marks
Understanding the energy source for diffusion
Description
Diffusion Energy Source
Diffusion is the movement of molecules and ions from an area of higher concentration to an area of lower concentration. This movement happens naturally without any external energy input.
- a[1]
State the source of energy that drives diffusion.
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- b[1]
Identify why diffusion does not require external energy input.
Aim for approximately 1 distinct marking point.
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