chemistry

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Across
  1. 1. A column on the periodic table
  2. 4. protons and neutrons
  3. 6. make or produce
  4. 7. Number of protons
  5. 9. dissolvable
  6. 10. A pure substance made of only one kind of atom
Down
  1. 2. A substance produced in a chemical reaction
  2. 3. flexible
  3. 5. A homogeneous mixture
  4. 8. Basic unit of matter