Chemistry

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Across
  1. 2. does not result in a new substance
  2. 5. the horizontal rows in the periodic table
  3. 6. an object that allows the flow of charge in one or more directions
  4. 7. substances you end with after the chemical reaction
  5. 8. substance composed of many identical molecules
  6. 10. something that is hard but very easy to break
Down
  1. 1. a group of electrons circulating around the nucleus
  2. 3. the amount of protons found in the element
  3. 4. has no charge to the atom
  4. 9. has a positive charge to the atom