Essential Chemistry for IGCSE - Particles And Purification (Section 7 - No. 43)
What is meant by the term 'concentration gradient'?
The difference in temperature between two areas.
The difference in the amount of a substance in two areas.
The total energy of the particles in a gas.
The size of the particles in a substance.
Explanation
The concentration gradient is the difference in the amount of a substance in two areas.
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