Across
- 2. Atomic number 92; radioactive element used in nuclear reactors.
- 4. Symbol Zn; protects steel from rusting.
- 6. Atomic number 29; conducts electricity in wires.
- 7. Atomic number 3; lightest metal, used in phone batteries.
- 8. Atomic number 5; a metalloid used in glass and detergents.
- 14. Symbol Ar; noble gas filling most incandescent light bulbs.
- 18. Symbol F; most reactive halogen.
- 19. Symbol Ne; a noble gas that glows brightly in advertising signs.
- 21. Atomic number 20; needed for healthy bones and teeth.
- 23. Symbol Pt; rare precious metal used in jewelry.
- 24. Atomic number 16; yellow element found near volcanoes.
- 25. Symbol Fe; core component of steel and blood hemoglobin.
Down
- 1. Atomic mass 26.982; lightweight metal used for packaging.
- 3. Atomic mass 200.59; only liquid metal at room temperature.
- 5. Symbol C; forms coal, graphite, and diamond.
- 9. Atomic mass 15.999; essential gas for respiration.
- 10. Atomic number 24; used to make stainless steel shiny.
- 11. Atomic number 2; fills balloons and airships.
- 12. Atomic mass 196.97; shiny metal for jewelry.
- 13. Atomic mass 24.305; burns with a brilliant white flame.
- 15. Atomic mass 58.693; used in coins and rechargeable batteries.
- 16. Symbol Ti; strong, lightweight metal used in aircraft.
- 17. Atomic mass 22.990; part of table salt.
- 20. Atomic mass 30.974; essential for DNA and fertilizers.
- 22. Atomic number 14; widely used in computer chips and solar cells.