2. Properties and characteristics

3. All matter is classified as one of three physical states of matter. SOLID LIQUID GAS

4. Fluids: a substance that can flow and take shape of its container. Gases – can be compressed Liquids – diffuse slowly (spread out evenly)

5. Form of matter with definite shape and volume. What are some solids in this room? Particles of a solid are tightly packed together.

6. If heated, a solid expands slightly. Solid is not defined by how dense something is or its hardness. Marble vs. wax

7. Form of matter that flows, has constant volume, and takes the shape of its container Examples of liquids in this room?

8. Particles are not rigid – are less closely packed. Can move past one another. Allows liquid to flow. Particles also expand when heated.

9. Form of matter that flows to conform to shape of container and fills the entire volume of container. Examples in this room?

10. Particles are far apart from each other. Because of space between particles, gases can be compressed.

11. Similar to gas but NOT the same. Gas is a substance that is naturally in gaseous state at room temperature. Vapor is gaseous state of a substance that is a solid or liquid at room temperature. Examples?

12. Change of State: a physical change between states of matter. Temperature influences changes of state. As temperature increases, the internal energy increases. S  L  G (Boiling)

13. S & L L & G 1.Phase changes require a gain or loss of ___? 2.When does it gain energy? 3.When does it lose energy? 4.At what points does the temperature stay the same? 5.Can two states coexist? Temp is constant Temp is constant

14. Fluids can be gases or liquids. Fluids can flow and take the shape of its container.