Across
- 4. a basic metal we use to wrap food
- 5. the first noble gas
- 6. most common element in the universe
- 7. the basis for life on earth
- 9. has an atomic number of 15
- 11. a basic metal which metal cans are made of
- 12. the outermost electrons
- 14. typically has a high electrical conductivity
Down
- 1. used in nuclear bombs
- 2. the halogen in the compound table salt
- 3. most common element on earth's crust
- 6. react with alkali metals
- 8. used in steel, not carbon
- 10. also used in nuclear bombs
- 13. the opposite of base