How Can I Smell Things From A Distance? SP's

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Across
  1. 4. Particles in a gaseous state can ___.
  2. 6. Gases have no definite shape or ___, and they can be added to or taken out of a container.
  3. 9. ___ point is the temperature at which a solid substance starts to become a liquid. Melting point is a property of a substance.
  4. 11. When a substance is heated, the molecules that make up the substance move ___. The ___ movement of the molecules results in higher temperatures.
  5. 12. As temperature ___, the volume of gas ___. As temperature decreases, the volume of gas decreases.
  6. 16. Gases are made of ___ with empty spaces in between them. All matter is made of particles.
  7. 19. ___ occurs when water vapor in the air slows down sufficiently to become a liquid.
  8. 22. Different ___ of atoms into molecules results in different properties.
  9. 23. Different materials have different ___ because they are made up of different particles.
  10. 24. Substances can change from a solid state to a gaseous state, and this is called ___.
  11. 25. The faster the molecules move, the higher the ___.
Down
  1. 1. The state (or phase) of matter can be changed by ___.
  2. 2. ___ occurs when molecules at the surface of a liquid gain enough energy to enter the gaseous state.
  3. 3. ___ occurs at the temperature at which molecules throughout the liquid change to the gaseous state. The boiling point is the temperature at which the change of state from liquid to gas occurs.
  4. 5. An element is made up of the same type of ___ all the way through.
  5. 7. Different ___ are made of different types of atoms.
  6. 8. ___ have different properties because they are made up of different types of atoms.
  7. 10. Some molecules are made of only one type of atom, but most molecules are made of different types of atoms. (Air is a ___ of different types of molecules.)
  8. 11. Melting is when a substance changes from a solid state into a liquid state. The opposite process is called ___.
  9. 13. Temperature is a measurement of the average ___ of molecules.
  10. 14. ___ help tell one element from another.
  11. 15. In a solid, molecules stay in place and can only ___.
  12. 17. Gases can expand and be ___.
  13. 18. Matter can exist in ___ states (or phases): solid, liquid, and gas.
  14. 20. ___ has mass and volume.
  15. 21. ___ is anything that has mass and volume.