Crossword 1

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Across
  1. 4. The slow change of a liquid into vapour at all temperatures.
  2. 6. The process by which particles of a substance mix on their own.
  3. 10. The heat energy absorbed or released during change of state without temperature change.
  4. 11. The force acting between molecules of a substance.
  5. 13. The state of matter with neither fixed shape nor fixed volume.
  6. 14. The smallest particle of a substance that can exist independently.
  7. 15. The change of vapour into liquid on cooling.
Down
  1. 1. The measure of the degree of hotness or coldness of a body.
  2. 2. The gap present between the molecules of a substance.
  3. 3. The state of matter having fixed volume but no fixed shape.
  4. 5. The rapid change of a liquid into vapour at a fixed temperature.
  5. 7. The direct change of a solid into vapour without becoming liquid.
  6. 8. The energy possessed by molecules due to their motion.
  7. 9. Anything that has mass and occupies space.
  8. 12. The state of matter with fixed shape and fixed volume.