Chemistry Review

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Across
  1. 2. Positive charged atomic particle
  2. 3. the start of a chemical reaction
  3. 7. share both traits from metals and nonmetals
  4. 9. a group of more than one element
  5. 10. a heated reaction
  6. 12. shiny good conductor not brittle
  7. 14. all elements that went into reaction come out of reaction with same number
  8. 15. the letters that identify the element
  9. 16. # of electrons in outer shell
  10. 19. the end result of a chemical reaction
  11. 20. atomic particle negative charge
  12. 22. atomic paticle no charge
  13. 24. metal nonmetal and metalloid _____
Down
  1. 1. a group of atoms
  2. 2. horizontal rows of elements with same electron shells
  3. 4. add up the protons and nuetrons
  4. 5. a full outer shell
  5. 6. dull bad conductor brittle
  6. 8. the creator of the PT
  7. 11. a pure substance on the PT
  8. 13. The Building block s of matter
  9. 17. the number of protons and electrons
  10. 18. a cold reaction
  11. 21. the different levels were valence are at
  12. 23. center of an atom