Question

a) Classify the following into elements, compounds and mixture:-
Sodium, Tin, Soap, Methane, Silver, Sugar, Solution, Blood.
b) Explain why, air is considered a mixture and not a compound.
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Answer 1

Answer:

Classification of the given substances in elements compounds and mixtures

Elements: Sodium, Silver, Tin and Silicon.

Compounds: Calcium carbonate, Methane and carbon dioxide.

Mixtures: Soil, Sugar, Coal, Air, Soap and Blood.

Answer 2

Answer:

elements,. Sodium, Tin,Silver

compounds. Methane

mixture. Sugar, Solution, Blood , soap.

b. Air is a mixture and not a compound because of following reasons: Air can be separated into its constituents such as oxygen, nitrogen etc. by fractional distillation of liquid air. Air shows the properties of all the gases present in it. For example: Air supports combustion because of oxygen present in air.