chemistry vocabulary

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Across
  1. 4. rings
  2. 7. number of parts a atom has
  3. 10. has a neutral charge
  4. 12. easily broken
  5. 14. can be pulled into wire
  6. 16. made of only one type of atom
  7. 17. center of the atom
  8. 19. found on the left side of the periodic table
  9. 20. surrounds the atom
Down
  1. 1. not shiny
  2. 2. a new solid is formed
  3. 3. has a negative charge
  4. 5. has a positive charge
  5. 6. change no new substance
  6. 8. big number in a chemical formula
  7. 9. smallest part of matter
  8. 11. can be bent
  9. 13. small number in a chemical formula
  10. 15. change new substance
  11. 18. electricity can pass through