Phases of Matter

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Across
  1. 2. 2words: a compound made of bonded carbon and oxygen atoms
  2. 4. a phase of matter that has definite volume and definite shape. The particles of a solid are tightly bonded and cannot move around
  3. 5. a particle made of two or more atoms that are held together with strong (covalent) bonds
  4. 13. the change of phase from gas to liquid (clouds and drops on the side of a cold glass)
  5. 14. 2words: the temperature at which a liquid changes to a solid; different for each substance
  6. 15. the smallest particle of an element (all matter is made of this)
  7. 18. phase of matter that has definite volume but no definite shape. Loosely bonded particles can flow over and around one another
  8. 19. the smallest piece of a substance that is still that substance (another word for atom/molecule)
  9. 21. a phase of matter that has no definite shape or volume. Particles fly independently through space
  10. 22. the ratio of mass and volume in a sample of matter (how much stuff is packed into a space)
  11. 24. a push or a pull
  12. 25. 2words: the temperature at which a solid changes to a liquid; different for each substance
  13. 26. to change phase from liquid to solid
Down
  1. 1. energy transfer that increases the kinetic energy of a substance’s particles
  2. 3. the reduction of volume of a sample of matter as a result of cooling
  3. 6. energy transfer that decreases the kinetic energy of a substance’s particles
  4. 7. the physical condition of a sample of matter based on the kinetic energy of its particles; common phrases include solid, liquid, and gas. Also called state.
  5. 8. 2words: energy of motion
  6. 9. the change of phase from liquid to gas (a puddle drying up)
  7. 10. an attractive force between atoms (holds them together)
  8. 11. existing in the gas phase
  9. 12. 2words: the solid phase of carbon dioxide
  10. 16. an increase of volume (to get bigger)
  11. 17. to move rapidly back and forth
  12. 20. to change phase from solid to liquid
  13. 23. a defined quantity of space (the size of an object)