Essential Chemistry for IGCSE - Particles And Purification (Section 6 - No. 42)
In the context of chemical purity, what is a 'trace' impurity?
A large amount of undesired substance in the sample.
A tiny amount of an undesired substance in the sample.
The main component of the sample.
The solvent used to purify the sample.
Explanation
A trace impurity is present in very small amounts.
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