EVERYDAY SCIENCE

Detailed explanation-1: -A pure substance is a material that has a constant composition (is homogeneous) and has consistent properties throughout the sample.

Detailed explanation-2: -A pure substance is a form of matter that has a constant composition (meaning it’s the same everywhere) and properties that are constant throughout the sample (meaning there is only one set of properties such as melting point, color, boiling point, etc.

Detailed explanation-3: -Chemical composition can be defined as the arrangement, ratio, and type of atoms in molecules of chemical substances. The chemical composition will vary when chemicals react. For example, when hydrogen combines with oxygen, water is produced.

Detailed explanation-4: -Pure Substance Matter that has a fixed composition and distinct properties. All pure substances are either elements or compounds. Elements All atoms are the same kind, elements have only one type of atom.

Detailed explanation-5: -substance : A form of matter that has constant chemical composition and characteristic properties. It is composed of one type of atom or molecule.