Chemistry Crossword

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Across
  1. 4. pure substance that cannot broken down any further
  2. 5. a compound of a metal and non-metal
  3. 7. made up of one type of matter
  4. 8. shiniest of a substances,
  5. 11. ability to conduct electricity or heat
  6. 13. when non-metal combine
  7. 14. workplace hazardous materials information system
  8. 17. chemical reaction that absorbs heat energy
  9. 19. when a solid changes to a gas
  10. 21. the number of protons in the nucleus of an atom
  11. 24. when a gas changes to a solid
Down
  1. 1. the mixture of magic and chemistry
  2. 2. the mass of all protons and neutrons in an atom
  3. 3. the horizontal rows on the periodic table
  4. 6. the center of an atom
  5. 7. change in appearance or state
  6. 9. when a new substance is formed and non-reversible
  7. 10. mixture in which the different substances are visible
  8. 12. contaminated material that is a threat to humans and health
  9. 15. mixture of two or more pure substances that look like one substance
  10. 16. chemical reaction that releases heat energy
  11. 18. can be in between metals and non-metals
  12. 20. electrically charged atoms
  13. 22. can eat away or corrode
  14. 23. substances in a reaction