Across
- 4. Why do giant metallic lattices conduct electricity?
- 6. The chemical used to test for the presence of a sulphate ion.
- 9. The distance from the nucleus to the outer shell electrons.
- 10. The chemical used to test for the presence of a halide ion.
- 11. Who discovered the transuranic elements and placed the lanthanides and actinides at the bottom of the periodic table?
- 12. What is the modern day periodic table organised by?
- 14. One use of group 2 compounds.
- 15. The structure formed by elements in group 5-8
- 16. The colour of the precipitate formed by iodide ions.
Down
- 1. Which chemical is used to help us to distinguish between the precipitates formed in the halide tests.
- 2. The product of the reaction between calcium oxide and water.
- 3. The orbital that is filled after 3p.
- 5. The trend in properties that is repeated across each period.
- 7. The energy required to remove one electron from each atom in one mole of the gaseous element to form one mole of gaseous 1+ ions.
- 8. An element found in the p block of the periodic table which has the 3p subshell as its outermost shell containing 5 electrons.
- 13. Which ion is acid used to test for?