Lucy's Changes In Matter Crossword

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Across
  1. 2. The property that makes things stick together
  2. 4. A characteristic of a chemical reaction that is observed
  3. 6. A property observed without changing the substance
  4. 7. Amount of matter something takes up
  5. 9. A response to a situation
  6. 12. The amount of space matter takes up
  7. 15. Something that holds stuff together
  8. 16. The substance that participates in a reaction
  9. 17. Ability to do work
  10. 18. 2 or more substances put together
Down
  1. 1. The smallest part of a chemical bond
  2. 3. Absorbs or uses heat energy (reaction gets heat surroundings lose it)
  3. 5. A substance that speeds up a chemical reaction without being consumed in the reaction
  4. 8. Substance made up different elements bonded together
  5. 10. Science that deals with property of substances
  6. 11. The release of heat (turns hot)
  7. 13. Something that has weight and takes up space
  8. 14. The smallest unit of a substance