1. Classification of Matter

2. Matter All Matter is made of atoms. Tiny particles Think of letters
Each letter is unique, and can be arranged to form different words
Ex: A, F, C, T – Fact, Tac, Fat, Cat, etc.

3. Pure Substances Element composed of identical atoms
EX: copper wire, aluminum foil

4. Pure Substances Compound
composed of 2 or more different elements in a fixed ratio
properties differ from those of individual elements
EX: table salt (NaCl)

5. Molecules Molecule Two or more atoms chemical bonded together
Does not have to contain different atoms
This means, all compounds are molecules, but not all molecules are compounds
Ex: H2 (Hydrogen), O2 (Oxygen), N2 (Nitrogen)

6. Mixtures Variable combination of 2 or more pure substances.
Heterogeneous
Homogeneous

7. Mixtures Solution homogeneous very small particles
particles don’t settle
EX: rubbing alcohol

8. Mixtures Heterogeneous medium-sized to large- sized particles
particles may or may not settle
EX: milk, fresh-squeezed lemonade

9. Mixtures Examples: Answers: tea muddy water fog saltwater
Italian salad dressing
Answers:
Solution
Heterogeneous

10. Can it be physically separated?
Matter Flowchart
MATTER
yes no
Can it be physically separated?
MIXTURE
PURE SUBSTANCE
Is the composition uniform? no
yes
Can it be chemically decomposed? no
yes
Homogeneous Mixture
(solution)
Heterogeneous Mixture
Compound
Element

11. Matter Flowchart Examples: element hetero. mixture compound solution
graphite
pepper
sugar (sucrose)
paint
soda
element
hetero. mixture
compound
solution