Pure matter contains only one type of substance, whereas mixed matter contains two or more types of substances. Pure matter can be an element or a compound, while mixed matter can be a heterogeneous or homogeneous mixture.

Pure Matter

* Contains only one type of substance

* Can be an element or a compound

* Has a definite chemical composition

* Has a uniform physical appearance

Mixed Matter

* Contains two or more types of substances

* Can be a heterogeneous or homogeneous mixture

* Does not have a definite chemical composition

* May or may not have a uniform physical appearance

Examples of Pure Matter

* Elements: hydrogen, oxygen, carbon, etc.

* Compounds: water, salt, sugar, etc.

Examples of Mixed Matter

* Heterogeneous mixtures: soil, sand, salad, etc.

* Homogeneous mixtures: air, gasoline, alloys, etc.

Pure matter is often contrasted with impure matter, which contains other substances in addition to the main substance. For example, impure water may contain dissolved minerals or bacteria.