Physical Changes & Chemical Reactions

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Across
  1. 5. During ______________ particles move further away from each other, causing the volume of the substance to increase
  2. 6. In a __________ reaction new substances are formed
  3. 7. When two substances are combined together but can still be physically separated
  4. 10. A physical process where a solid breaks up in a liquid
  5. 11. Chemical changes are generally ___________; the original substances cannot be restored
  6. 15. Physical changes are generally ___________; the original substance can be restored
  7. 17. During ______________ particles move closer together, causing the volume of the substance to decrease
  8. 18. The term used to describe a liquid turning into a solid
Down
  1. 1. In a ________________ change no new substances are formed
  2. 2. If ___________ are produced during a chemical reaction it indicates a gas is being released
  3. 3. The substances you have at the end of a chemical reaction
  4. 4. The substances you have at the beginning of a chemical reaction
  5. 7. The term used to describe a solid turning into a liquid
  6. 8. The term used to describe a gas turning into a liquid
  7. 9. The solid formed during a chemical reaction with two liquids
  8. 12. The term used to describe a liquid turning into a gas
  9. 13. Some chemical reactions must absorb energy in the form of _________ in order to occur
  10. 14. A _________ change can be an indication of a chemical change
  11. 16. During some chemical reactions _________ is released in the form of heat, sound or light