Across
- 2. anything having mass and taking up space
- 6. one of states of matter
- 8. spectrum chemical element or chemical compound
- 9. fusion when two or more nuclei together
- 11. able to be changed
- 12. something becomes a liquid by heat
- 13. bang how the universe began
- 14. when water become a solid
- 16. how far is it from starting cycle to ending cycle
- 18. are dark planet -sized regions that appear on the sun
- 20. one complete performance of a periodic process
- 21. light from the sun
- 23. having a PH of less than 7
Down
- 1. the basic unit of matter
- 3. a rearrangement of atoms into new substances
- 4. lighter elements sometimes have too many neutrons
- 5. mountain or hill which having lava
- 7. matter and space as a whole
- 10. type of rocks
- 15. atoms of same elements having a different mass
- 17. all atoms with more than 82 protons are radioactive
- 18. the relative amount of solute
- 19. table of chemical elements
- 20. microwave type of big bang theory
- 22. send into the air