MIXED PH/CH

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Across
  1. 5. forces that cancel each other out
  2. 7. a change in speed over time
  3. 10. a pure substance made of one kind of atom
  4. 11. a group of atoms bonded together
  5. 15. the amount of space an object takes up
  6. 16. forces that cause acceleration
  7. 17. a push or pull on an object
  8. 18. mass divided by volume
  9. 19. the amount of matter in an object
Down
  1. 1. how far an object has travelled
  2. 2. a diagram showing how one thing changes with another
  3. 3. the unit of force
  4. 4. a change of state from liquid to solid
  5. 6. a substance made of two or more elements
  6. 8. measured in seconds, minutes, or hours
  7. 9. a change of state from solid to liquid
  8. 12. a state of matter with a fixed volume but no fixed shape
  9. 13. the unit of mass
  10. 14. a change of state from liquid to gas
  11. 20. how fast something is moving