1. Types of Matter Mixtures vs. Substances

2. Pure Substances Matter that has a uniform and unchanging composition is a substance. A substance is made of the same things in the same proportions every time. All samples match: Water Lead Salt

3. Two types of substance Elements Made of only one type of atom Cannot be broken down (physically or chemically) into simpler substances Used to make all other matter All listed on the periodic table Compounds A combination of two or more different elements that are combined chemically The compound has different properties than the elements that make it up Can be separated, but only by chemical reactions

4. Element or Compound Gold Water Salt Lead Sugar Element Compound Element Compound

6. Mixtures Mixtures are combinations of two or more pure substances that can be physically separated. Mixtures vary in composition: Not everyone has the same chicken soup recipe…

7. Two types of mixture Heterogeneous These are not blended smoothly throughout Two samples of the mixture don’t match Ex: Raisin Bran River water Pulpy orange juice Homogeneous These have a constant composition throughout. Always a single phase (i.e. two liquids mixed) Often called solutions Ex: Salt water Air Steel (Iron and carbon)

8. Heterogeneous or Homogeneous? Gasoline (87 octane) Pizza Cereal with milk Blueberry muffin Homogeneous Heterogeneous

9. Copy this into your notes Matter

10. Fill out the “matter web” Start with “Matter” in the top box. What are the two types of matter that we talked about today? Each type of matter has two categories. What are they?

11. Assignment Adding on to 1-9… Page 69; 15-19