Harrison's Matter & Diffusion Crossword

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Across
  1. 2. / Matter that moves freely
  2. 7. / Degree of heat
  3. 8. / Measurement of surface
  4. 10. / Spreading of matter
  5. 12. / Firm Shape
Down
  1. 1. / Portion of matter
  2. 3. / Act of moving
  3. 4. / Means of doing something
  4. 5. / Focusing attention
  5. 6. / Moving at high speed
  6. 9. / Matter that flows freely
  7. 11. / not quickly