Chemistry Crossword

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Across
  1. 2. A combination of pure substances.
  2. 4. Shiny, malleable, ductile, conduct electricity.
  3. 6. Negatively charged particles.
  4. 7. The new materials produced by the reaction.
  5. 8. Anything on the periodic table.
  6. 10. A chemical reaction that releases heat energy.
  7. 11. Liquid to solid.
  8. 15. Most reactive non-metals.
  9. 16. Positively charged particles.
  10. 17. Characteristics that can be used to describe a substance.
  11. 19. A cloudy mixture that cannot be separated.
  12. 21. An element that we need to live.
Down
  1. 1. Gas to solid.
  2. 3. The materials at the start of a reaction.
  3. 4. Have both metallic and non-metallic properties.
  4. 5. Solid to gas.
  5. 9. A catalyst found in the human body.
  6. 10. A chemical reaction that absorbs heat energy.
  7. 11. A substance that help a reaction proceed faster.
  8. 12. Liquid to gas.
  9. 13. Anything that has mass and occupies space.
  10. 14. Solid to liquid.
  11. 18. A cloudy mixture that can be separated.
  12. 20. The horizontal rows on the periodic table.
  13. 22. The vertical rows on the periodic table.