Q2 of 252 Page 57

Which of the following are ‘pure substance’?

Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air

Ice, iron, hydrochloric acid, calcium oxide and mercury are the pure substances whereas milk, brick, wood and air are impure substances.


More from this chapter

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24

What are pure substances? Give two examples of pure substances.

 25

What are the two types of pure substance? Give one example of each type.

 27

What is the other name for impure substances? Give two examples of impure substances.

 29

Which of the following substances are elements?

Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine