Across
- 3. This element increases the strength of aluminum and magnesium alloys
- 7. The human body needs this to maintain strong bones
- 8. This metal is used for medical implants
- 10. Sometimes used to make voices higher
- 11. This element has a healing history
Down
- 1. This element was named after a Norse god
- 2. Has the chemical symbol K
- 4. This element when pure is a silvery white
- 5. Humans need this to survive
- 6. Used in phone batteries
- 9. The most reflective metal
- 12. Used in expensive jewelry