Question

0-5 Classify the following substances as an element, Compound, Pure Substance or mixture
Diamond
Oxygen
Water
Soil
Gold
Salad
dressing
Copper
Sulphate
Pure Air
Salt
Carbon
Dioxide​

Answer 1

Answer:

Element - oxygen , gold , diamond ( as it is a pure form of carbon , it is an allotrope of carbon )

Compound - water , Copper sulphate , salt , carbon dioxide

Mixture - soil , salad dressing , pure air

Note: Elements and Compounds are pure substances.

Mixtures are impure substances .