Differentiate between a compound and a mixture.

Property Compound Mixture
Composition Fixed ratio of elements Variable proportions of substances
Bonding Chemical bonds between elements No chemical bonding between components
Separation Can only be separated chemically Can be separated physically
Example Water (H₂O), Salt (NaCl) Air, Sand, Salad

A compound has a fixed chemical composition with atoms bonded together, while a mixture is a physical combination of different substances that can be separated by physical means.

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