Question

7
Which of the following materials fall in the category of a "pure
substance?
la) Ice
(b) Milk
(c) Iron
(d) Hydrochloric acid
(e) Calcium oxide
( Mercury
lg Brick
Wood
(1) Air
the following mixtures​

Answer 1

Answer:

please mark brainlist

Explanation:

Ice, iron, hydrochloric acid, calcium oxide, mercury are pure substances as they have definite composition. Milk is a colloid and acts as a heterogeneous mixture; hence is not a pure substance.

Answer 2

Answer:

(a) Ice,(b)milk, mercury, wood

Explanation:

Love you friend