1. Oh My!

2.  In your groups think of all the matter you can  One person from each group write them on the board  In your groups again try to sort the ideas into reasonable groupings.

3.  Anything that has mass  Composed of atoms

4. PHYSICAL  Describe characteristics of element or compound  Ex.: ▪ Color ▪ Density ▪ Boiling point ▪ Melting point CHEMICAL  Determine how the element or compound will react with others  Ex. ▪ Combustibility ▪ Reaction with water ▪ Reaction with acids

5. PHYSICAL  Do not change the nature of the substance  Cutting  Bending  Melting  Freezing CHEMICAL  Change from 1 substance to another  Burning  Cooking  Evidence  Water vapor (smoke)  Other gases

6. ELEMENTS  Composed of only 1 type of atom  May be diatomic  2 of same type of atom bonded together  7 sisters COMPOUNDS  Composed of more than 1 type of atom  Fixed ratios of elements

7.  Most things in nature  Substances held together by physical forces  Can be separated by physical means  Types:  Heterogeneous ▪ Visibly different substances or phases / states ▪ Trail mix, salad  Homogeneous ▪ Uniform appearance and composition ▪ Kool-aid, sugar water

8.  Solution  A type of homogeneous mixture  One substance (solute) is dissolved in another (solvent) ▪ Ex. ▪ Solid in liquid: tea, coffee ▪ Solid in solid: brass, bronze ▪ Alloy – metal in metal ▪ Amalgams: special type of alloy; mercury + another metal

9. SoluteSolventExample Liquid Vinegar (acetic acid in water) SolidLiquidSalt water GasLiquidSoft drinks (CO2 in water) LiquidGasWater in air SolidGasSmog Gas Air (oxygen, nitrogen, etc) Solid Bronze (alloy)

10.  Colloids  Homogeneous mixtures  Particles are of intermediate size ▪ Ex. – milk, fog  Show Tyndall effect  Emulsions  Type of colloid made of oil and water ▪ Ex. – salad dressing

11.  Suspensions  Heterogeneous mixtures  Particles are large enough to settle out ▪ Sedimentation ▪ Ex.  sand in water – solid in liquid  aerosols – liquid in gas

12.  Create a concept map of matter  Include examples

13.  Create a concept map of matter MatterPure substanceElementCompoundMixtureHomogeneousSolutionColloidHeterogeneousSuspension