Perfect 10 - Science 9/10 A

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Across
  1. 4. What you end with
  2. 9. Absorbs energy
  3. 12. A proccess that involves rearrangement of molecules
Down
  1. 1. Mass is neither created nor destroyed
  2. 2. A number placed in front of a formula to balance a chemical equation
  3. 3. Releases energy
  4. 5. Small numbers found to the right of each element
  5. 6. Symbolic representation of a chemical reaction
  6. 7. A cause of particular action or event
  7. 8. A substance that takes part in and undergoes change during a reaction
  8. 10. Allows and doesn't allow mass to flow freely
  9. 11. Something that starts a chemical reaction