Across
- 2. Anything that has mass and takes up space
- 4. He
- 5. Gas to liquid
- 6. Liquid to solid
- 7. positively change(p＋)
- 8. have no change(n)
- 11. solid to gas but don't get to liquid
- 12. Nacl
- 13. Solid to liquid
- 15. Liquid to gas
Down
- 1. C
- 3. negatively changed
- 5. two or more elements chemically combined together
- 9. Fe
- 10. two or more substances mixed together physically
- 12. Ag
- 14. matter that has no definite shape
- 16. the smallest part of an elements that can exist