Across
- 7. Includes two or more elements
- 8. Substances jumbled together
- 10. Doesn't break or crack when hammered
- 12. You do this when your food is cold
- 14. Most of these are compounds made of carbon and hydrogen atoms
- 16. Precious ornaments we wear
- 17. 188 of these on the periodic table
- 19. Solid material, good electrical and thermal conductivity
- 20. Fragile, transparent material
Down
- 1. Substance using symbols for elements
- 2. 8th element on periodic table
- 3. Change where the substance/s themselves are changed
- 4. The only yellow ductile metal, worth a lot too
- 5. Basic unit of matter that are in everyday objects
- 6. Can be deformed without losing toughness
- 9. One of the rare minerals that are also expensive
- 11. Liquid to vapor
- 13. Formed when two or more atoms join together
- 15. Ice does this when out of freezer after certain amount of time
- 18. Most gemstones are these and they are found in rocks