Matter Vocabulary

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Across
  1. 2. transfer of heat/energy out of the air; gas to a liquid
  2. 3. the very outer energy level of an atom has 8 electrons
  3. 5. the amount of mass per unit of volume
  4. 6. solid to a gas without becoming a liquid first; dry ice in a fog machine
  5. 7. two or more elements joined together
  6. 9. has no shape and no volume
  7. 13. has a definite shape and definite volume
  8. 14. neutral charge of an atom
  9. 15. transfer of heat/energy into an object; solid to a liquid
  10. 17. negative charge of an atom
  11. 19. transfer of heat/energy out of an object; liquid to a solid
Down
  1. 1. gas to a solid without becoming a liquid first; frost on a window
  2. 4. a change in matter where something new is made; rust on a car
  3. 8. a change in matter where nothing new is made; cutting paper
  4. 10. smallest unit of matter
  5. 11. anything that has mass and takes up space
  6. 12. how much space an object takes up
  7. 16. positive charge of an atom
  8. 18. has a definite volume, but not definite shape