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Across 2. Type of salt formed from sulphuric Acid 6. Type of salt formed from hydrochloric Acid 8. Very unreactive metal 9. One of the things required for corrosioin to take place 10. Copper and iron metals placed into a lemon produces a _ _ _ _ _ _ _ 11. Naturally ocurring compounds containing metals 12. Rusting is a special term for Iron but what is the general term for all metals 14. Term for splitting compunds using electricity 19. Reactivity can be tested only when the experimental set up is _ _ _ _ 20. Speeds up corrosion 21. Type of salt formed from nitric Acid 22. Iron, nickel, tin, copper, aluminium and zinc are all types of _ _ _ _ _ 23. A coating of this helps prevent corrosion 24. Storage of metals under oil protects them from the _ _ _ _ _ _ _ _ in the air 26. A mobile source of energy 27. Reacts with a metal forming a salt and hydrogen gas 30. Describes the noise of the reaction of hydrogen near a lit splint 31. Using this form of energy we can extract low reactivity metals from compounds 32. A list describing the ease with which metals form other compounds

Down 1. Voltage produced using two identical metal electrodes 3. Gas produced when acids and metals react 4. One of the things required for corrosioin to take place 5. 'Stone' added with Iron and Carbon to the Blast furnace 6. Heating copper oxide with a powder of this can extrate the metal 7. To increase the voltage produced from a lemon battery the type of electrode metals should have a _ _ _ _ _ spacing in the Reactivity Series 13. Coating a metal with another, usually zinc, to prevent corrosion is called 15. Name the gas given off at the positive electrode when splitting copper chloride using electrolysis 16. Essential protection when doing chemistry experiments 17. Iron etraction takes place in a _ _ _ _ _ / _ _ _ _ _ _ _ 18. Very reactive metal 25. Type of compound formed when a metal reacts with oxygen 28. High carbon form of coal used in Iron extraction 29. The name for corroded iron