CHEM 1211 Section 1.1 (Exploring the Particulate Nature of Matter)

Atomism

the belief that all forms of matter are composed of atoms

atom

an extremely tiny, indestructible building block as defined by atomism that makes up all matter

pure substance; mixture

All matter can either be considered a ____ _________ or a _______.

Pure Substance

matter that cannot be separated by a physical process

Mixture

matter that can be separated by a physical process

Element

a pure substance that cannot be decomposed by a chemical reaction, like pure gold

Compound

a physical substance that can be decomposed by a chemical reaction, like ice (water)

Homogenous Mixture

A mixture that is uniform throughout, like vinegar

Heterogenous Mixture

A mixture that is not uniform throughout, like salad dressing

Graph of all matter and how it is categorized