1. Ch. 18 - Matter I. Classification of MatterClassification of Matter (p. 552-559)  Matter Flowchart  Pure Substances  Mixtures

2. A. Matter Flowchart MATTER Can it be physically separated? Homogeneous Mixture (solution) Heterogeneous MixtureCompoundElement MIXTUREPURE SUBSTANCE yesno Can it be chemically decomposed? noyes Is the composition uniform? noyes ColloidsSuspensions

3. A. Matter Flowchart  Examples:  graphite  pepper  sugar (sucrose)  paint  soda element hetero. mixture compound hetero. mixture solution

4. B. Pure SubstancesPure Substances  Element Element  composed of identical atoms  Hint: Look @ the Periodic Table of Elements  EX: copper wire, aluminum foil

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

6. C. Mixtures  A combination of 2 or more pure substances. HeterogeneousHomogeneous

7. C. Mixtures  Solution Solution  homogeneous  very small particles  no Tyndall effect Tyndall Effect  particles don’t settle  EX: rubbing alcohol

8. C. Mixtures  Colloid Colloid  heterogeneous  medium-sized particles  Tyndall effect  particles don’t settle  EX: milk

9. C. Mixtures  Suspension  heterogeneous  large particles  Tyndall effect  particles settle  EX:fresh-squeezed lemonade

10. C. Mixtures  Examples:  mayonnaise  muddy water  fog  saltwater  Italian salad dressing colloid suspension colloid solution suspension

11. Summary- Mr. Parr Classifying Matter Song

12. Click on Einstein to see a short rap song on the classification of matter.