Extreme Chemistry Crossword

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Across
  1. 1. An ion made up of more than one atom that behaves as a single particle.
  2. 2. Positively charged particles
  3. 3. It is a colorless, Odorless, and it is a gas
  4. 6. They react with halogens
  5. 8. A diagram that represents the arrangement of electrons
  6. 9. Candle wax melts. What type of change is this?
  7. 12. They orbit the nucleus
  8. 13. Metals, Shiny silvery metals
  9. 14. They hold tightly in the nucleus and cannot be added or removed
  10. 15. Tells us the # of valence electrons in each element
  11. 16. Horizontal row on Periodic Table
Down
  1. 1. A structured arrangement of elements
  2. 4. If a flaming split at the mouth of the test tube pops this caused it.
  3. 5. The boiling point of water is 100 degrees Celsius. What type of property is this?
  4. 7. They do not form compounds because they are stable
  5. 10. They have 7 valence electrons in outer orbit
  6. 11. A particle that atoms join by covalent bonds