Across
- 3. each what has it's own density?
- 7. compounds can only be broken up by what?
- 10. mass is often measured in what?
- 11. solids keep their what?
- 13. something that has mass and takes up space is what?
- 14. another state of mater is...
- 16. three-fourths of elements are what?
- 17. what comes from petroleum?
- 18. petroleum is a complex mixture of what?
Down
- 1. one state of matter is...
- 2. what has north and south poles?
- 4. what are the basic building blocks of matter?
- 5. when liquid dose what it tunes into gas?
- 6. the melting point is also called the what point?
- 8. metals like copper are good at what?
- 9. what measures mass?
- 12. on a magnet opposite poles do what?
- 14. an object's weight depends on it's what in the universe?
- 15. an object's ability to float is called what?
- 19. the last state of mater is...