Chemistry

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Across
  1. 2. a mixture in which you cannot see the different parts
  2. 6. a form of matter in which the molecules are packed in a medium tightness
  3. 7. a form of matter in which molecules are packed very tightly together
  4. 9. the substance that undergoes a reaction, this substance changes
  5. 10. a good transmitter of electricity
  6. 11. a form of matter in which the molecules are very loosely packed
Down
  1. 1. the columns which separate elements on the periodic table
  2. 3. Russian chemist who developed the first periodic table of elements
  3. 4. substance formed by a chemical reaction
  4. 5. a bad transmitter of electricity
  5. 8. a mixture in which you can see the different parts