Question

Air is regarded as a mixture because:

Answer 1

Answer:

Explanation:

Air is regarded as a mixture because it consists of a number of gases like oxygen, carbon dioxide, nitrogen, neon etc.

It also contains pollen grains, dust particles etc.

Therefore air is regarded as a mixture.

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Answer 2

Air is regarded as a mixture because it is composed of 78% nitrogen, 21% oxygen, and 1% other gases and water vapour.

Explanation:

1. Air is the gaseous mixture that makes up the Earth's atmosphere. This gas is colourless and odourless, so we cannot see it, but we can only feel it.
2. The atmosphere is an ocean of these gases. It is composed of 78% nitrogen, 21% oxygen, and 1% other gases and water vapour.
3. Moisture content varies by location. Compared to wetlands, dry areas have less moisture.