Matter

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Across
  1. 1. Gas particles have the most __________ Energy
  2. 5. A liquid changing to a solid
  3. 8. Two substance in in the same area but not bonded together
  4. 9. The center of an atom
  5. 10. Two or more different elements bonded together
  6. 11. A solid changing to a liquid
  7. 13. Two or more atoms bonded together
  8. 16. A chemical __________ shows the atoms in a substance
  9. 17. When dry ice turns to gas
  10. 18. Added to a substance to change its state
  11. 19. Definite shape and volume
Down
  1. 2. When water molecules gain heat energy
  2. 3. Definite volume but no shape
  3. 4. You need to ________ heat energy to slow down particles
  4. 6. When gas particles lose energy very fast
  5. 7. The number of atoms of carbon in 2(CH)
  6. 10. When gas particles slow down to become water
  7. 12. Made of one type of atom
  8. 14. No Shape or definite volume
  9. 15. How particles in a solid move