Yi Ying Chan
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Yi Ying Chan
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IGCSE Chemistry - 1.7, Chemical purity

IGCSE Chemistry - 1.7, Chemical purity

Question 1 of 5

1

When a substance is impure, the melting point increases.

Select one of the following:

  • True
  • False

Explanation

Question 2 of 5

1

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

Select one or more of the following:

  • Chromatography.

  • Distillation.

  • Checking melting and boiling points.

  • Looking through a microscope.

  • Reacting it with other substances.

Explanation

Question 3 of 5

1

When is purity important?

Select one of the following:

  • Making orange juice.

  • Baby food.

  • Drinking water.

  • Creating pillowcases.

Explanation

Question 4 of 5

1

Fill the blank space to complete the text.

Impure substances melt and boil over .

Explanation

Question 5 of 5

1

What industries require substances to be pure?

Select one or more of the following:

  • Sports industry.

  • Medicine industry.

  • Computer industry.

  • Music industry.

  • Beauty industry.

  • Food industry.

Explanation

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