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Across 2. Used to test for carbonate ions 4. Type of reaction where a more reactive halogen 'pushes out' the less reactive halogen in a compound. 8. This type of bond is found in simple molecules BETWEEN the molecules. 12. This metal is used to carry out flame tests as it does not produce a flame colour 16. Colour of precipitate formed when Fe2+ reacts with a few drops of sodium hydroxide 18. This structure for a compound has a very high mpt 20. The flame colour produced when testing for sodium ions 21. The flame colour produced when testing for potassium ions 23. Colour of precipitate formed when Cu2+ reacts with a few drops of with sodium hydroxide 24. This type of structure has a low melting point 26. A word used to describe ionic, metallic and some covalent structures. 28. Formed when potassium bromide reacts with chlorine solution 29. The colour of the precipitate produced by Cl- ions 30. The number of covalent bonds around each carbon in diamond 31. Word to describe the ability of a metal to be drawn out into a wire 33. Colour of precipitate formed when Fe3+ reacts with a few drops of with sodium hydroxide

Down 1. Used to test for halide ions 3. The flame colour produced when testing for calcium ions 5. The attraction between oppositely charged ions in an ionic compound. 6. This (formula) is used in flame tests to convert the compounds into their metallic chlorides. These are very volatile. 7. This ion is tested for with dilute HCl and Barium chloride solution 9. gas formed when sodium hydroxide is added to a compound containing ammonium ions 10. The ion that is tested for using limewater 11. The wire loop is cleaned between tests to prevent this 13. Formula for silver nitrate 14. This describes the electrons in a metal structure 15. This type of bond is found in simple molecules BETWEEN the ATOMS. 17. The scientific name for an insoluble solid 19. Word to describe the ability of a metal to be shaped 20. The colour of the precipitate produced by I- ions 22. The more electrons there are in a simple covalent molecule the __________ the melting point. 25. The flame colour produced when testing for lithum ions 27. The number of covalent bonds around each carbon in graphite 32. The colour of the precipitate produced by Br- ions