Chemistry Crossword Puzzle

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Across
  1. 1. negatively charged, orbit in shell clouds
  2. 4. mass/volume=density
  3. 5. anything that has mass and takes up space
  4. 8. solute+solvent
  5. 9. protein, lipid, carb, nucleic acid
Down
  1. 2. the study of matter and how it changes
  2. 3. neutral found in nucleolus
  3. 6. superheated matter
  4. 7. positively charged particle found in the nucleus
  5. 8. definite shape and volume, one of the four states of matter