Across
- 1. Graphite and diamond are both made from this element
- 4. The ________, the posh term for group 7
- 6. The maximum number of electrons that can be held by the second electron shell
- 8. I am the most reactive of the halogens
- 10. I bond with 2 hydrogen atoms covalently to make water
- 13. A neutral sub-atomic structure
- 14. Properties of both metal and non-metals
- 15. The vertical columns of the periodic table are called
- 17. In this type of bond atoms share electrons
- 18. My atomic number is 84
- 21. I burn in oxygen to give a bright white light
- 23. This metal ion burns with a lilac flame
- 26. The horizontal rows of the periodic table are called
Down
- 1. An excellent conductor of electricity, often used to make wires
- 2. This group in the periodic table is unreactive
- 3. A positive sub-atomic structure
- 4. I have a mass number of 1
- 5. A negative sub-atomic structure
- 7. The name given to an atom that has a different number of neutrons
- 9. My symbol is Xe
- 11. When two or more elements chemically combine
- 12. My symbol is Zr
- 16. This type of metals have very colourful compounds
- 19. I am the most reactive of the alkali metals
- 20. Used in party balloons to make them float
- 22. The _______ metals, the posh term for group 1
- 24. Yellow non-metal, burns in oxygen to produce an acidic choking gas
- 25. A metal often used in jewellery
- 27. In this type of bond atoms gain or lose electrons