Matter

Three States of Matter

Solids:

Atoms in solids are tightly packed in an orderly fashion, and vibrate slowly but don’t move from place to place.

- Keeps its own volume and shape.

Liquids:

Atoms are close together and free flowing, sliding past one another.

- Takes the shape of its container.

Gas:

Atoms are spaced far apart with no arrangement and move quickly.

- Takes the shape and volume of its volume.

MIXTURES

-          more than one set of properties

-          physically combined

-          more than one kind of substance

Homogeneous (solutions and colloids)

-          uniform throughout

-          appears to have only one component

Heterogeneous (suspensions and mechanical mixtures)

-          non uniform

-          appears to have more than one component

PURE SUBSTANCE

-          one set of properties

-          one kind of particle

Element (metals, metalloids and non-metals)

-          simplest form of matter

-          can not be decomposed

-          made up of atoms

Compound

-          made up of elements

-          smallest particle is called a molecule

-          ionic (acid, base, salt)

-          covalent (organic compounds)