Fluids and the Particle Theory of Matter

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Across
  1. 4. is the best teacher in the world
  2. 5. particles in a liquid can overcome some of their attraction to each other and slide past each other. This is why liquids __ and take the shape of their container
  3. 7. temperature affects the speed at which __ move
  4. 9. can flow and spread out because their particles are far apart and have overcome their attraction to each other
  5. 11. in the early days of glass making __ sand was heated to more than 1700 degrees C
  6. 13. when the __ of a solid, liquid or gas decreases, its particles move more slowly and closer together
  7. 14. can flow and take the shape of their container because their particles have partly overcome their attraction for each other
  8. 16. in liquids and solids the particles are close together and have strong forces of ___ between them
  9. 17. is an increase in the volume of a substance in response to an increase in its temperature
Down
  1. 1. is anything that has mass and volume
  2. 2. is a measure of how much space a substance takes up
  3. 3. involves using air to shape molten glass, much like blowing a bubble with bubble gum
  4. 6. is a measure of how much matter there is in a substance
  5. 8. hold a definite shape because their particles are packed closely together and vibrate in one place
  6. 10. the volume of most fluids decreases when they cool from a liquid to solid except for __
  7. 11. involves heating glass to temperatures around 600 degrees C so it can be shaped in a mold
  8. 12. glass __ involves placing various pieces of molten glass on a surface so that they are in contact
  9. 15. the particle theory of matter is a way of explaining the __ of matter