1. Classification of Matter

2. Classification of Matter
PURE SUBSTANCES
MIXTURES
SOLUTIONS
MECHANICAL MIXTURES
ELEMENTS
COMPOUNDS

4. Impure Substances (mixtures)
Contain more than one type of particle
Solids, liquids or gas
Most common
Have variable composition
Two types: SOLUTIONS AND MECHANICAL MIXTURES

5. SOLUTIONS At least two types of particles
Particles uniformly scattered (can’t tell one particle from the other)
Separation techniques: distillation, evaporation
Eg. Perfume, coffee, alloys (2 or more metals such as bronze, stainless steel)

6. MECHANICAL MIXTURES At least two types of particles
Particles NOT uniformly scattered (can tell one from the other)
Separation techniques: filtration, evaporation
Eg. Soil, pizza, orange juice with pulp

7. PURE SUBSTANCES Contains only one type of atom or molecule
Can be natural (cotton) or synthetic (polyester)

8. ELEMENTS One type of particle (atom)
100+ different kinds (see periodic table)
Includes diatomic atoms (O2, N2, H2, etc.)

9. COMPOUNDS More than one type of atom Must be on the periodic table
Does not include diatomic atom
Eg. CO2, H2O