Particulate Nature of Matter

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Across
  1. 2. a pure substance produces ___ spot when separated by chromatography
  2. 4. on cooling, particles lose kinetic energy, move slower and come ____ together
  3. 6. particles in this state of matter has the highest kinetic energy
  4. 7. solids and liquids cannot be ___ because there is little space between particles
  5. 10. a pure substance has a ___ melting and boiling point
  6. 12. during melting or boiling, the temperature remains ___ as energy absorbed is used to overcome forces of attraction
  7. 14. process where a solid turns into a liquid on heating
  8. 15. particles in a solid are ___ arranged and very closely packed
Down
  1. 1. attractive forces between particles in a gas are ___
  2. 3. process where a liquid changes into a gas below its boiling point
  3. 5. the state of matter where particles are able to move and slide and exchange positions
  4. 8. the state of matter where particles are only able to vibrate about fixed positions
  5. 9. attractive forces between particles in a solid are very ___
  6. 11. matter ___ when heated as the particles move further apart
  7. 13. particles in a gas move freely in all directions at ____ speeds