Physical and Chemical changes

1234567891011
Across
  1. 2. when a substance changes from a liquid to a solid
  2. 3. when the volume of an object is smaller and the density becomes larger
  3. 6. no new substance has formed
  4. 7. something that requires the absorption of heat
  5. 8. the opposite of freezing
  6. 10. when a substance changes from a gas to a liquid if it is cool enough
  7. 11. when a liquid is warmed and becomes a gas
Down
  1. 1. the opposite of contraction
  2. 3. when a new substance has formed
  3. 4. the change of state when a substance changes from a solid to a gas
  4. 5. a reaction that requires a release of heat
  5. 6. when a new solid is formed
  6. 9. when substances change from a gas to a solid