the amount of substance expressed in a manageable quantity
A particular type of atom or Ion
A group of atoms or Ions bonded together
A Charged Particle
The smallest unit of matter as a neutral particle
a group of covalently bonded atoms with no overall charge
A group of covalently bonded atoms with no overall charge

Concept Map of 1.1 & 1.2

Particle

Ion

Compound

Element

Formula Units

The smallest whole number rations for each elements of an ionic compound

% composition by mass

The % by Mass of an element in a formula

Emperical Formual

The formula of a molecule or compound using lowest whole number ratios

An umbrella term referring to a single unit of a substance

Atom

Polyatomic Ion

Molecule

Molecular Formula

The actual formula of a molecule or ionic compound as it exists in nature

Mole

Atomic Mass

The mass of one mole of a substance

Matter

Mixture

Homogeneous Mixture

Uniform composition and properties throughout

Heterogeneous Mixture

Properties are not uniform throughout.

Pure Substance

Has a constant composition