Across
- 1. force of gravity between the object and earth
- 5. there are 118
- 8. substances that change in a different way
- 12. is much less dense than water
- 13. smallest unit of a element
- 14. has north and south poles
- 16. materials as they get hotter
- 18. materials as they get colder
- 19. it measures force
Down
- 2. comes from petroleum
- 3. solids keep their
- 4. tiny very dense body in the atom center
- 6. three states of matter
- 7. amount of matter in a object
- 8. three fourths of the elements are
- 9. also called the melting point
- 10. what measures mass
- 11. when heat is removed from a boiling substance
- 15. a substance melting or boiling
- 17. determines what element it is