Question

Which of the following materials fall in the category of a “pure
substance"?
(a) Ice
(b) Milk.
(c) Iron
(d) Hydrochloric acid
(e) Calcium oxide
(1) Mercury
(g) Brick
(h) Wood
(i) Air.
​

Answer 1

Answer:

ice,pure milk, or I don't know

Answer 2

Answer:

Ice, iron, hydrochloric acid, calcium oxide and mercury are the pure substance from the above question.

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