Chemistry

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Across
  1. 1. / Anything that has mass and volume
  2. 5. / two or more atoms
  3. 8. / Two substances combined
  4. 10. / Visibly different substance
  5. 11. Metals / All have one electron in shell
Down
  1. 2. / Made of one type of atom
  2. 3. Gases / doesn't react
  3. 4. / All substances are the same throughout
  4. 6. / Two different types of atoms
  5. 7. / All have seven electrons in shell
  6. 9. / Solid under standard condition