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Across 7. Process where sulphur dioxide is converted to sulphur trioxide, using a V2O5 catalyst. 11. Process where ammonia is formed from nitrogen and hyrdogen using a Fe catalyst. 12. Starch is used as an indicator that goes from blue-black -> ________, in thiosulphate reactions. 14. The reaction when one ligand can bind more strongly and displaces another ligand in a complex ion. 15. A species that donates a lone pair of electrons to a transition metal ion in a complex. 19. MnO2 is a catalyst in this type of reaction, water and oxygen are the end products. 20. Ligands with no overall charge. 21. A transition metal with ligands co-ordinately bonded to it. 22. Shape of complex ion involving 6 ligands. 23. Usual shape of complex ion involving 4 ligands. 25. Type of brackets used when drawing complex ions. 26. Colour of manganese(II) 29. Common foodstuff that requires hydrogenation reactions to take place in its synthesis. 31. Ligand with 1 lone pair of electrons. 32. Colour of Copper(II) Hydroxide precipitate and initial colour of Cobalt(II) Hydroxide precipitate. 33. Colour of Cobalt(II) solution and Cobalt(II) Hydroxide precipitate on standing. 34. Ligand with 2 lone pairs of electrons. 35. When a noticeable colour change occurs in a reaction that allows you to see it has finished.

Down 1. A bond where both electrons are from the same species. 2. Uncommon shape of complex ion involving 4 ligands, notably containing Pt and Ni. 3. Type of reaction that forms a solid from two solutions. 4. The number of co-ordinate bonds that can be formed in a compound. 5. Potassium ________, chemical that goes from orange to green when a substance has been oxidised. 6. Colour of Copper(II) solution. 8. Complex ion isomer used as cancer fighting drug. 9. Common reagent used in titration reactions involving transition metals. 10. A d-block element that forms at least one ion with an incomplete d-sub-shell. 13. Ligand with several lone pairs of electrons. 16. Colour of Iron(II) Hydroxide precipitate, which darkens on standing. 17. Colour of mangate(VII) 18. Ni catalyst is used in this type of reaction. Converts alkenes into alkanes. 24. Red-brown colour of Fe(III) Hydroxide precipitate. (And colour of Fe(II) Hydroxide on standing) 27. Colour of Iron(II) solution. 28. Colour of Iron(III) solution. 30. Ligands with a negative charge.