1. Classes of Matter

2. Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds
(homogeneous)
Compounds
(heterogeneous)
Solutions

3. Mixtures Contain more than one type of particle Solids, liquids or gas
Most common
Have variable composition
Two types: SOLUTIONS AND MECHANICAL MIXTURES

4. Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds
(homogeneous)
Compounds
(heterogeneous)
Solutions

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. Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds
(homogeneous)
Compounds
(heterogeneous)
Solutions

7. 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

8. Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds
(homogeneous)
Compounds
(heterogeneous)
Solutions

9. Pure Substances Contains only one type of atom or molecule
Can be natural (cotton) or synthetic (polyester)

10. Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds
(homogeneous)
Compounds
(heterogeneous)
Solutions

11. Elements One type of particle (atom)
118 different kinds (see periodic table)
Includes diatomic atoms (O2, N2, H2, etc.)

12. Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds
(homogeneous)
Compounds
(heterogeneous)
Solutions

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

14. Matter Mixtures Pure Substances Mechanical Mixtures Elements Compounds
(homogeneous)
Compounds
(heterogeneous)
Solutions