Tali's Crossword

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Across
  1. 3. Molecules of the same substance sticking together
  2. 6. A combination of substances
  3. 9. A chemical reaction that lets out heat
  4. 10. The smallest unit of matter
  5. 13. The amount of matter in something
  6. 14. Substances formed during a chemical reaction
  7. 16. A physical reaction
  8. 18. Substances before a chemical reaction
  9. 19. The ability to work
Down
  1. 1. A characteristic of a physical reaction
  2. 2. Two or more atoms joined together
  3. 4. A characteristic of a chemical reaction
  4. 5. The measure of kinetic energy
  5. 7. A chemical reaction
  6. 8. What happened after you mix substances
  7. 11. Has mass and takes up space
  8. 12. The amount of space something takes up
  9. 15. A chemical reaction that absorbs heat
  10. 17. The transfer of thermal energy