Chemistry crossword

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Across
  1. 2. non metals only
  2. 3. new substances produces in a chemical reaction
  3. 5. has the symbol K
  4. 7. ions that are negatively charged
  5. 9. metal+non metal
  6. 10. substances that react together in a chemical reaction
Down
  1. 1. small numbers at the base of larger letters that tell you how many atoms of these elements are in a compound
  2. 4. ions that are positively charged
  3. 6. has atomic mass of 27.0
  4. 8. a charged ion