PHYSICAL SCIENCE

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Across
  1. 3. how tightly or loosely packed a substance is
  2. 6. light bouncing off a substance
  3. 8. a substance containing 2 or more substances easily seperated
  4. 9. the ability to cause change in matter
  5. 11. anything that has mass and takes up space
  6. 12. a liquid in which the substances are evenly mixed
Down
  1. 1. an energy of vibrations
  2. 2. a system with many parts
  3. 4. thermal energy
  4. 5. a material that blocks energy from passing through it
  5. 6. the bending of light
  6. 7. a material that allows energy to pass through it
  7. 10. a smooth steady movement