Chemical Reactions and Energy Review

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Across
  1. 1. How much matter is in a space
  2. 3. When light is absorbed by matter, turning into heat energy
  3. 5. Lets matter in and out
  4. 7. How fast a particle is moving
  5. 11. The average kinetic energy of all the particles in a system
  6. 14. A type of matter that moves a little fast, taking the shape of it's container
  7. 15. No matter can get in or out
Down
  1. 2. Add all the data points, then divide by how many you have
  2. 4. When liquids turn into solids
  3. 6. A type of matter that does not move much, mostly vibrates
  4. 8. When liquids turn into gases
  5. 9. A type of matter that moves really fast, taking up the volume of the container it's in.
  6. 10. Anything that has mass and takes up space
  7. 12. Two or more atoms bonded together
  8. 13. When gas molecules come in contact with a colder surface and become liquid