Analysis Crossword
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Do all you can to learn this work and the symbols for the ions. All the
best. Dr E.
Check
Across: 1. The nitrate of this metal is used to test for chloride, bromide and iodide. 2. This metal gives a lilac colour in the flame test. 5. This metal gives a blue coloured precipitate when sodium hydroxide is added. 7. This acid is added before testing for sulphate ions. 9. This anion gives a yellow colour when silver nitrate is added. 10. This ion gives no precipitate when sodium hydroxide is added but a bunsen flame is changed to a red colour. 12. This ion gives alkaline fumes when warmed following addition of sodium hydroxide. 14. This anion is always soluble in water, whatever the cation. 16. This anion gives a cream precipitate in the presence of silver nitrate. 18. This anion gives a white precipitate in the presence of silver nitrate. 19. This cation gives a bright yellow colour to a bunsen flame.
Down: 1. This anion produces a white precipitate in the presence of barium chloride. 3. These ions give a white precipitate when sodium hydroxide is first added, but the precipitate dissolves when sodium hydroxide is in excess. 4. This category of element gives cations. 5. This anion bubbles when acid is added, and the bubbles change limewater milky. 6. The chloride of this metal is used to test for the presence of sulphate ions. 8. Sodium _ _ _ _ _ _ _ _ _ is used to precipitate almost all metal ions. 11. This metal ion gives a white precipitate when sodium hydroxide is added, but gives no colour in the flame test. 13. This acid is always added before test a substance for chloride, bromide or iodide. 15. Any _ _ _ _ will make carbon dioxide when added to a carbonate. 17. This metal has two different ions, one giving a green precipitate with sodium hydroxide, the other a tan precipitate under the same conditions.