Question

which of these is not a mixture (a) Rock salt (b) blood (c) soap(d) all of the above​

Answer 1

Answer:

Elements →

The elements are regarded as the building blocks of the universe.

Sodium, Silver, Tin and Silicon are elements.

Compounds →

It is a pure substance made up of two or more elements chemically combined in a fixed proportion by mass.

Calcium carbonate, Methane and Carbon dioxide are compounds.

Mixture →

It is a substance containing two or more substance in any proportion.

Soil, Sugar, Coal, Air, and seawater are mixtures.