1. Chapter 6 States of Matter Section 1 Solids, liquids and gases

2. Matter  Anything that takes up space and has mass  Common States of Matter  Solid  Liquid  Gas  Plasma- extremely hot, very active charged particles  Most common found in the universe  Stars, lightning, flourescent lights  Bose- Einstein Condesates- super cold and not active

3. Describing a state of matter  Mass- the amount of matter in an object  Kg, g  Volume- how much space that a sample of matter takes up  L, ml, cc  Density= Mass/Volume

4. Solids  Definite shape and definite volume  Particles in a solid- vibrate around each other  They are very tightly packed together and held together by strong forces https://www.youtube.com/watch?v=ZARiF4- tM9Iwww.youtube.com/watch?v=ZARiF4- tM9I

5. Types of Solids  Crystalline  Regular repeating pattern  Example Diamond  Amorphous  Particles arranged randomly  Ex- charcoal Charcoal Diamond

6. Liquids  Has a definite volume but no definite shape  Particles move faster so move more freely in the substance  Particles tend to be further apart so the attractive forces decrease

7. Liquids vocabulary  Viscosity- the measurement of a liquids resistance to flow  Honey has high viscosity while water has low viscosity  Viscosity due to particle mass, particle shape, and the strength of the attraction between molecules  Viscosity may change with increases in temperature

8. Liquid vocabulary cont.  Surface tension  Attraction of similar molecules is cohesion  Water molecules at the surface do not have water molecules above them  They experience a greater downward pull  So they become stretched like the head of a drum  The uneven forces acting on the particles on the surface of a liquid

9. Gases  No definite volume and no definite shape  The molecules in a gas are rapidly moving and are extremely far apart  Attractive forces are weak to non existent  Vapor- term used for the gas state of something that is a solid or liquid at room temperature https://www.youtube.com/watch?v=PhMluFYe_ vQwww.youtube.com/watch?v=PhMluFYe_ vQ