Chemestry

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Across
  1. 4. How pact something is
  2. 6. Point where something starts to melt
  3. 8. Central part of an atom
  4. 9. A vertical row in the periodic table
  5. 10. Substance that has mass
  6. 11. Smallest most basic substance
  7. 12. Conservation of Matter
Down
  1. 1. The same
  2. 2. Made up of multiple elements
  3. 3. Positive electric charge
  4. 5. Charge of negative electricity
  5. 7. Different