Community Chemistry 5

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Across
  1. 4. Element that has lost an electron from its outer shell
  2. 5. Number of valence electrons held by all alkili metals
  3. 7. Most useful scientific tool; home to elements
  4. 9. Most reactive non metal group
  5. 10. Chemical reaction that needs energy to proceed
  6. 11. The result of a chemical reaction
  7. 12. Inert element that does not react with others
  8. 13. Element whose outer shell gained an electron
  9. 14. Ionic compound with a 1:1 ratio of anion to cation
  10. 16. What you have before a chemical reaction
  11. 18. Compounds that exist as gasses at room temperature
Down
  1. 1. Says that each element is going to try to fill shell
  2. 2. Chemical reaction in which energy is a product
  3. 3. Chemical bonding of two charged particles
  4. 6. Any electron in the outer shell
  5. 8. Energy needed to remove or add an electron
  6. 15. Energy that is key to salt formation
  7. 17. Most reactive metals in periodic table