1. MATTER VERSUS ENERGY matter: takes up space (volume) and has mass energy: a force that acts upon matter Are matter (mass) and weight the same? NO

2. CLASSIFICATION OF MATTER MATTER Substance Mixture ElementCompound Homog.Heterog. simplest form of matter; chemically combines to form compounds

3. CLASSIFICATION OF MATTER can be separated into simpler substances by chemical rxn MATTER Substance Mixture ElementCompound Homog.Heterog.

4. CLASSIFICATION OF MATTER completely uniform composition – components are evenly distributed (solution) MATTER Substance Mixture ElementCompound Homog.Heterog.

5. CLASSIFICATION OF MATTER not uniform composition – samples are not the same in different areas MATTER Substance Mixture ElementCompound Homog.Heterog.

6. STATES OF MATTER http://legacyweb.chemistry.ohio-state.edu/betha/nealGasLaw/fr1.1.html

7. STATES OF MATTER: SOLID definite volume and shape particles packed closely together incompressible low kinetic energy

8. STATES OF MATTER: LIQUID can flow; definite volume takes the shape of a container particles in close contact incompressible; can expand upon heating medium kinetic energy

9. STATES OF MATTER: GAS particles take shape and volume of container particles are far apart highly compressible high kinetic energy

10. PHYSICAL VS CHEMICAL PROPERTIES PHYSICAL: quality that can be measured without changing its composition examples: color, solubility, hardness, density, melting and boiling point

11. PHYSICAL VS CHEMICAL PROPERTIES CHEMICAL: quality that can be found only by changing the composition of a substance examples: reactivity, heat of combustion, chemical stability

12. PHYSICAL CHANGE change that alters a substance without changing its composition examples: boil, freeze, dissolve, bend, grind, cut change of state reversible

13. CHEMICAL CHANGE one or more substances change into new substances examples: burn, rot, rust, explode, decompose energy is given off or absorbed odor or color change irreversible