Across
- 2. This element is used in borosilicate glass, which does not break easily when heated.
- 4. This element is s the lightest element on the periodic table.
- 8. This element is the major positive ion inside human cells and is found in bananas.
- 9. This element is added to salt to prevent deficiency and helps the thyroid function properly.
- 10. This metal is found in chlorophyll and helps plants capture sunlight.
- 11. This element can form toxic vapors when heated and was once used in old switches that rely on its liquid conductivity.
- 13. This valuable metal does not rust and is used to make jewelry.
- 14. This element is found in all living things.
- 15. This metal is used in electrical wires.
Down
- 1. This element glows faintly in the dark and is found in ATP, the energy molecule in cells.
- 3. This element is the main ion responsible for fluid balance in the human body
- 5. This element strengthens bones.
- 6. This element is used in some photographic chemicals
- 7. This element is added to toothpaste.
- 12. This gas is added to pool water to kill bacteria.
