Properties of Matter

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Across
  1. 2. The third state of matter is.
  2. 3. Petroleum is a complex mixture of——————-.
  3. 7. A————- is the smallest unit of an element that retains the properties of the elements.
  4. 8. The melting point is also called.
  5. 10. Opposite pole's—————————one another.
  6. 13. Comes from petroleum.
  7. 16. mass is often measured in.
  8. 17. The molecules of any substance are—————- to each other
  9. 18. One state of matter is.
  10. 19. Molecules of—————-always contain only one kind of atom.
  11. 20. As more matter gets packed into the same amount of space, the material’s density———————.
Down
  1. 1. Every substance has its own particular melting point and.
  2. 4. Scientists write symbols for compounds called.
  3. 5. An objects ability to float is called its.
  4. 6. Materials————————-as they get cooler.
  5. 9. like copper are good————-of electricity.
  6. 11. The liquid in a _________ expands or contrasts the most with changes in temperature
  7. 12. The second state of matter is.
  8. 14. Materials————————-as they get hotter.
  9. 15. Gases fill the ————————- of their containers.