Chemistry Crossword 2

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Across
  1. 2. creator of the law of conservation of mass
  2. 3. the idea that matter cannot be created or destroyed, only transformed
  3. 4. purest substance made of one type of atom
  4. 5. substances present before a chemical reaction
  5. 8. anything that has mass or takes up space
  6. 9. neutrally charged part of an atom
  7. 10. positively charged part of an atom
Down
  1. 1. an equation where both sides have the same number of atoms
  2. 6. negatively charged part of an atom
  3. 7. substances created as a result of a chemical reaction