Oceans sustain aquatic life, are used for transport, provide minerals., and for recreational purpose. The nature of Matter Matter is a substance that can occupy space. Matter can be divided into pure substance and mixture. A pure substance is a substance that has fixed composition. A pure substance can be divided into elements and compounds.
All matter is made up of atoms - electrons, neutrons, and protons.
States of matter - physical conditions in which we find matter at a given place and time. There are three states of matter. Solid - rigid, strong, high density, molecules locked into strict geometric order. Liquid - Free upper surface, molecule close, not very rigid, and medium density. Gas - very low density, no fixed shape, and easily compressed.