We know that there's gas around us when:, We smell and see it, We don't smell it or see it, Air is_______ and _____, colorless and odorless, Has color and odor, We can use carbon dioxide in_______, Stopping fires, Making fires, We can use carbon dioxide in_______, Making bread fluffy, Making fires, Changing from solid to liquid is, Gas, Melting, This is called______, Matter, Melting, We can live without oxygen, True, False, The air is a mixture of gases, True, False, Different gases have different properties, True, False.

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