Chemistry Crossword Puzzle

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Across
  1. 5. compound/compounds formed with no metals
  2. 7. that change colour depending on if it is exposed to a acid or base
  3. 10. lowest temperature that a liquid will ignite
  4. 11. shell/the outermost shell in an atom
  5. 12. compound/compounds that have both a metal atom and a nonmetal atom
  6. 13. + O2 → H2O + CO2
  7. 15. gases/the most stable element group on the periodic table is the _______
  8. 17. reaction in which molecules break down
  9. 18. ability for a material to be stretched
  10. 19. bond/the bond formed when two atoms share electrons
Down
  1. 1. acid
  2. 2. acid/HNO3
  3. 3. reaction that occurs when two different atoms join together to make a --molecule
  4. 4. metals/the first group on the periodic table is the __________
  5. 6. order for neutralization to occur, a salt and ____ must be made in a reaction
  6. 8. naturally found in pairs
  7. 9. ability for a material to be flattened or rolled
  8. 14. ability to be dissolved into a liquid
  9. 16. atom that has either gained or lost an electron
  10. 17. displacement/the reaction when two different molecules switch atoms