class 8 set F

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Across
  1. 3. a combination of two or more different kinds of matter, each of which keeps its own physical properties.
  2. 7. the amount of matter in an object.
  3. 9. the density of an object relative to that of water: objects having a relative density less than water will float; objects having a relative density greater than water will sink.
  4. 11. the temperature at which a solid changes to a liquid.
  5. 12. energy an object has because of its motion or position.
Down
  1. 1. the bending of light rays when they pass from one substance into a different substance.
  2. 2. a force that pulls magnetic materials across a distance.
  3. 4. heat energy.
  4. 5. a mixture in which two substances are evenly mixed and cannot be easily separated.
  5. 6. rapid back and forth movement of matter that produces sound.
  6. 8. matter that has a definite shape and volume.
  7. 10. the movement of energy caused by vibrations.
  8. 11. anything that has mass and takes up space.