Complete Clue List
Across
1. Found in bones and teeth
4. Chemical symbol for lead
5. Chemical symbol for cobalt
6. Chemical symbol for radium
8. Chemical symbol for chlorine
9. Chemical symbol for platinum
10. Chemical symbol for iridium
12. Used in advertising signs
13. It, and its compounds, are poisonous
16. Chemical symbol for indium
17. A highly valued metal
19. Chemical symbol for magnesium
20. Its symbol comes from the Latin word 'ferrum'
21. Chemical symbol for einsteinium
23. Named after the Titan who stole fire from the Gods
Down
1. Used in electrical wiring and in water pipes
2. Chemical symbol for lawrencium
3. Diamonds are a form of this element
4. Named after a European country
7. This element is added to copper to make brass
11. Chemical symbol for rhenium
13. Used in fluorescent light bulbs
14. Precious metal
15. A lack of this in your diet can cause a goiter
18. Chemical symbol for molybdenum
21. Chemical symbol for europium
22. Chemical symbol for samarium