Across
- 2. A type of coin is named after me
- 6. Has 3 energy levels and they are all full
- 9. This element is the most important for all life on Earth
- 13. Neighbour to gold and starts with a P
- 14. Cans used to be made out of this metal
- 16. extremely reactive metal in the 3rd period
- 19. When electricity passes through me, this element creates colourful light
- 21. If this element lost an electron, it would be just a proton
- 22. This large metal was used as the explosive for the first atomic bombs
- 23. A very strong metal with 4 valence electrons
- 24. In the same group as gold but with fewer protons
- 25. Has 9 valence electrons and 4 electron shells
- 27. A required gas for respiration
- 30. The only metal that is liquid at room temperature
- 32. Bonds with sodium to form salt
- 33. Sand and glass is mostly made out of this element
Down
- 1. This halogen is the most aggressively reactive of all the elements
- 3. A common metal, one of the components in steel
- 4. Has the element symbol "K"
- 5. A very radioactive element with 150 neutrons
- 7. A yellow powder in elemental form and at room temperature
- 8. Has a 3- charge in ionic form and is in period 2
- 10. Group 3, period 2
- 11. An exception to the metalloid ladder rule
- 12. An alkali metal used in modern in batteries in its ionic form
- 14. Has an atomic mass of 183.85
- 15. This alkaline earth metal is used to start fires in the wilderness
- 17. A heavy metal that was once used for bullets
- 18. An important component of match heads, is neighbour to silicon
- 20. I should not fill balloons with this element
- 26. An important component of animal bones
- 28. Civilizations have sought this malleable metal for centuries
- 29. A very large noble gas in the same period as silver
- 31. One of the two components of the alloy bronze