Has a Definite and Unchanging Composition?

Matter that has a uniform and unchanging composition is called a substance, also known as a pure substance

pure substance
A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds.
› wiki › Chemical_substance
.

Is an example of substance that has definite and unchanging chemical composition?

A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Mixtures are physical combinations of two or more elements and/or compounds. Mixtures can be classified as homogeneous or heterogeneous.

Has a definite chemical composition that Cannot change?

element: A chemical substance that is made up of a particular kind of atom and cannot be broken down or transformed by a chemical reaction. substance: A form of matter that has constant chemical composition and characteristic properties.

Alexander Ross

Alexander Ross

Gaming, Esports & Interactive Media Writer

Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.