Question

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

Answer 1

Answer:

a, c, d, e and f,

your answer

Hope it help u

Answer 2

(b) Milk , (c) Iron and (f) Mercury