PARTICLES

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Across
  1. 5. the smallest part of an element that contains the properties of that element
  2. 7. a state of matter in which the particles vibrate in fixed positions close to each other
  3. 10. to change state from a solid or a liquid to a gas; evaporate, boil or sublime
  4. 12. o change state from a liquid to a gas at a slow rate
  5. 15. the amount of mas (kg) in a unit of volume (cm3)
  6. 16. the movement of particles from an area of high concentration to an area of low concentration
  7. 17. the transfer of heat energy within or between solid objects by collisions between higher and lower energy particles
  8. 19. a simplified explanation that makes something easier to explain or understand
  9. 20. to change state from a solid or a gas to a liquid
  10. 21. able to be squashed to take up less space
  11. 25. to increase in size
  12. 26. the amount of space something occupies
  13. 27. a state of matter which the particles are vey far apart and move with lots of energy
  14. 28. a particle in which two or more atoms are chemically bonded together
  15. 30. of matter a solid, liquid and gas, depending on how the particles inside it behave
  16. 31. o change state from a solid to a liquid
Down
  1. 1. to decrease in size
  2. 2. the amount of matter in an object, measured in kilograms
  3. 3. a force that holds particles to each other
  4. 4. the transfer of heat in fluids, either liquids or gages
  5. 6. the force n object applies to a surface
  6. 8. a state of matter in which the particles are close together but unable to break free from each other
  7. 9. to change state from a liquid to a solid
  8. 11. an explanation of a set of related observations
  9. 13. change a change that does not involve a chemical reaction; the form of the substance remains the same
  10. 14. to change state directly from a solid to a gas without going through a liquid phase
  11. 16. the change of state from a gas directly to a solid without going through a liquid phase
  12. 18. to change state from a liquid to a gas at a rapid rate
  13. 21. to change state from a gas to a liquid
  14. 22. a tiny unit of matter
  15. 23. to change state from a liquid to a solid
  16. 24. the ability to do work, such as moving or talking
  17. 28. anything takes up space and mass
  18. 29. of state a change from one physical from(solid, liquid or gas) to another