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Basic classification (matter): Air is best described as which of the following? Consider composition (N₂, O₂, Ar, CO₂, etc.) and bonding. Choose the correct classification.

Difficulty: Easy

Mixture
Compound
Element
Electrolyte

Correct Answer: Mixture

Explanation:

Given data

Air contains multiple gases in variable proportions.

Concept/Approach
Because air is a physical combination of gases without fixed composition or chemical bonding between them, it is a mixture, not a single compound or element.

Final Answer
Mixture

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