its muffin time

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Across
  1. 3. its shape or volume can change when you press down on it
  2. 5. a state of matter that fits the whole of its container
  3. 8. the temperature at which a solid turns into a liquid
  4. 9. to change a solid to a liquid because the temperature goes up
  5. 11. the process by which different types of particles mix because they move from where there's lots of particles
  6. 12. the individual parts of substance
  7. 15. to change a gas into a liquid when the temperature goes down
  8. 16. something is squeezed so that it takes up less space
Down
  1. 1. to change a liquid into a solid because the temperature goes down
  2. 2. anything that has a mass and takes up space
  3. 4. to increase in size or volume
  4. 6. the energy of motion
  5. 7. to get smaller in size or volume
  6. 10. state of mater between solids and gasses
  7. 13. the amount of physical matter an object contains
  8. 14. to stay the same