Across
- 1. - Heavy element used in radiation shielding?
- 3. - Noble gas that glows white when ionized?
- 5. - Used in salts to make red fireworks?
- 7. - Element named after Copenhagen?
- 10. - Liquid golden alkali metal?
- 12. - Element number 13?
- 15. - Used as a key ingredient in steel?
- 18. - Last element discovered as of 2025?
- 20. - Used to significantly strengthen many steel?
- 21. - Used to make cans?
- 23. - Very light metal and hard to destroy?
- 25. - Element named after a danish scientist?
- 27. - Oxidises a greenish blue?
- 28. - Element used in very strong magnets?
- 29. - Which element is usually depicted as green?
- 31. - Densest element?
- 34. - Used in lighting?
- 35. - Noble gas usually used for lasers?
- 37. - Which element makes your voice squeaky?
- 38. - Which element is Au?
- 39. - Used to make stainless steel?
- 40. - Light element used in space rockets?
- 41. - Heavy element with the highest melting point?
Down
- 1. - First element in the lanthanide group
- 2. - Most inert element that is not a noble gas?
- 4. - Used in some batteries?
- 6. - Used in glowing signs?
- 8. - First fully artificial element (that is not technetium or promethium)?
- 9. - First human-made element?
- 11. - Used in lightbulb filaments?
- 13. - Softest metal?
- 14. - Used to make technetium?
- 16. - Radioactive noble gas?
- 17. - Most reactive element?
- 19. - What gas makes up most of the atmosphere?
- 22. - Last element formed before a star supernovaes?
- 24. - Element that burns white as well as in CO₂?
- 26. - Which element makes up 2 3rds of water by atoms?
- 30. - Toxic metalloid element?
- 32. - The most conductive element?
- 33. - Used in reactor shielding?
- 36. - Red highly corrosive halogen?