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7nadin3 [17]
3 years ago
11

An example of a pure substance is ____.

Chemistry
1 answer:
Vsevolod [243]3 years ago
6 0

Answer: e) all of these

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Copper

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water  (H_2O), carbon dioxide (CO_2)

Mixtures are not pure substances as they consist of elements and compounds combined physically and not in any fixed ratio. Example: Air

Thus all given substances are pure substances.

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