chemistry crossword

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Across
  1. 2. the most reactive non-metals
  2. 3. positively charged centre of an atom
  3. 6. chemical combination of 2 or more elements
  4. 8. an atom or group of atoms that lose or gain electrons
  5. 9. the process of a solid turning into a gas
  6. 15. the combination of two or more non-metals
  7. 17. characteristics that can be used to describe a substance
  8. 18. mass of one atom of an element
  9. 19. a non-reversible cloudy mixture
  10. 21. able to be stretched into a long wire
  11. 22. combination of symbols and numbers that represent a compound and the amount
  12. 23. anything that takes up space and has a mass
Down
  1. 1. negatively charged particle that orbits the nucleus of an atom
  2. 4. element that has both metallic and non-metallic properties
  3. 5. the point of which a substance begins to boil
  4. 7. positively charged and wants more protons
  5. 10. the most reactive metals
  6. 11. combination of symbols that represent a compound
  7. 12. neutral charges
  8. 13. made of only one atom
  9. 14. ability for a substance to conduct electricity or heat
  10. 16. number of protons in an atom of an element
  11. 20. amount of mass in a given volume of a substance
  12. 24. negatively charged and wants more electrons