Across
- 3. - Vital for life and found in DNA.
- 6. - Makes up the majority of Earth's atmosphere.
- 8. - Used as a disinfectant and in pools.
- 9. - A dark red-brown liquid at room temperature.
- 11. - Used in galvanization to prevent rust.
- 14. - Used in fireworks for a red color.
- 16. - Used in semiconductors.
- 18. - A lightweight metal with various applications.
- 19. - Commonly used in coins and alloys.
- 21. - Adds corrosion resistance to steel.
- 23. - Known for its stiffness, light weight, and high melting point.
- 26. - The basis of all organic compounds.
- 28. - A highly reactive, pale yellow gas.
- 29. - Melts at a low temperature and is used in thermometers.
- 30. - Found in sand and used in computer chips.
- 31. - Used in alloys and for medicinal purposes.
- 34. - A metal used in batteries.
- 35. - A noble gas used in neon signs.
- 36. - Necessary for respiration and combustion.
- 37. - Used in borax and boric acid.
- 38. - An essential trace element in the diet.
- 39. - A highly reactive metal that reacts violently with water.
Down
- 1. - Used in lighting and as anesthetic.
- 2. - Known for its distinct smell and yellow color.
- 4. - A transition metal used in the aerospace industry.
- 5. - Used in the production of phosphors for displays.
- 7. - Known for its excellent electrical conductivity.
- 10. - Used in superconductors and nuclear reactors.
- 12. - Used in steel alloys.
- 13. - Resistant to corrosion and often used in nuclear reactors.
- 15. - Known for its strength and corrosion resistance.
- 17. - Known for its high melting point.
- 20. - Can be toxic and used in some alloys.
- 22. - The lightest element in the periodic table.
- 24. - An essential nutrient for plants and animals.
- 25. - Used in the production of strong magnets.
- 26. - Found in bones and teeth.
- 27. - A soft, silvery-white metal.
- 32. - A key component of hemoglobin in red blood cells.
- 33. - Used in balloons and as a cooling agent in MRI machines.