What are the methods we can use to determine if a substance is pure?

Checking melting and boiling points.

Reacting it with other substances.

Quiz

IGCSE Chemistry - 1.7, Chemical purity

Yi Ying Chan 5 questions

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1When a substance is impure, the melting point increases.
1. ATrue
2. BFalse
2What are the methods we can use to determine if a substance is pure?
1. AChromatography.
2. BDistillation.
3. CChecking melting and boiling points.
4. DLooking through a microscope.
5. EReacting it with other substances.
3When is purity important?
1. AMaking orange juice.
2. BBaby food.
3. CDrinking water.
4. DCreating pillowcases.
4Impure substances melt and boil over [blank_start]a range of temperatures[blank_end].
1. Aa range of temperatures
5What industries require substances to be pure?
1. ASports industry.
2. BMedicine industry.
3. CComputer industry.
4. DMusic industry.
5. EBeauty industry.
6. FFood industry.