Pure substances - gasoline, grain alcohol, gold, water, mercury, sugar, and oxygen.
Mixtures - air, salt water.
Pure substances vs Mixtures
Pure substances are made up of only one type of molecule. On the other hand, mixtures are substances that are a mix of two or more different molecules.
Mixtures can be heterogenous when the different molecules are not evenly distributed or homogenous when the molecules are uniformly distributed within the substance.
Gasoline, grain alcohol, gold, water, mercury, sugar, and oxygen all consist of a single type of molecule. They are thus, pure substances.
Air is a mixture of different gases such as oxygen, carbon dioxide, nitrogen, etc. Salt water is a mixture of water and salt.
More on mixtures can be found here: https://brainly.com/question/24898889
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