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G10 electricity in chemistry


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Cambridge IGCSE Scienec Syallbus

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G10 electricity in chemistry

  1. 1. Using Ion Kit Boards<br />Create an ion of :-<br />Potassium,<br />Calcium<br />Oxygen<br />Chlorine<br />Draw their respective bonding diagrams <br />
  2. 2.
  3. 3. Objectives<br />Must : Define reduction and oxidation, and write word equations.<br />Should : Write balanced symbol equations.<br />Could : Write balanced equations for redox reactions.<br />
  4. 4. Definitions<br />Reduction<br />Oxidation<br /><br />
  5. 5. Experiment<br />Take 0.5g of CuO and react with 0.5g of C using the 1 place digital balances.<br />Tasks<br />Record starting masses<br />Heat using a crucible and lid on a pipe clay triangle<br />Record your observations<br />When reaction is complete and mixture is cool record the mass<br />Create the balanced chemical equation<br />Identify the oxidised and the reduced species<br />Calculate the mass of Carbon Dioxide created<br />How would you test for Carbon Dixoxide ?<br />
  6. 6. Answers<br />BCE<br />REDOX<br />LIMITING REAGENT<br />MASS OF PRODUCTS<br />
  7. 7. Experiment<br />Accurately mass 1.0g of CuO.<br />Add 1.0g of C.<br />Heat over a high heat using a crucible.<br />Record observations.<br />Write a balanced word and symbol equation for the reaction.<br />Identify the oxidised and the reduced compounds.<br />
  8. 8. Starter Activity<br />Write two definitions of Oxidation and Reduction <br />
  9. 9. Identify the Oxidised and the Reduced Molecules in ……include half ion equations <br />Caesium + Iodine Caesium iodide<br />Magnesium + HCl Magnesium Chloride<br />Iron + Astatine  Iron Astatide<br />
  10. 10. Reactivity Series<br />A more / less reactive metal will displace a more/less reactive metal.<br />Create a results table to show the results of adding each of the following metals to a solution of the other metals…<br /> Cu / Cu Sulphate<br /> Mg / Mg Sulphate<br /> Zn / Zn Sulphate<br />
  11. 11. Rocks<br />Are an natimtorp source of many chemicals, especially atlmse, e.g. haematite is the ore for iron, bauxite is the ore for aluminium, and chalcopyrite for epcpor.<br />
  12. 12.
  13. 13. Create a Concept Cartoon<br />Where the more reactive metal WITH A NAME<br />Displaces, or attacks the less reactive metal, wins and kicks the less reactive out of solution.<br />Must: Have minimum 4 frames<br />Should: Include balanced equations<br />Could : Include half ion equations<br />
  14. 14. Galvanic Cells<br />These use the spontaneous oxidation and reduction to produce a potential difference.<br />
  15. 15. Carbon in the reactivity Series<br /><br />
  16. 16. Thermite<br /><br />
  17. 17. Writing Equations <br />Identify using colour the oxidised and the reduced compounds in the following;<br />
  18. 18. Thermite – a useful redox reaction<br />A redox reaction<br /><br />The reaction <br />
  19. 19. Starter<br />Which of the following reactions will occur <br />1. Pb displacing a solution of K+ <br />2. Na displacing a solution of Cs+<br />3. Zn displacing a solution of Fe2+<br />
  20. 20. Electrolysis and Galvanic Cells<br />ELECTROLYSIS is the chemical effect of ELECTRICITY on ionic compounds, causing them to break up into SIMPLER substances, usually elements.<br />A GALVANIC cell creates electricity because of the metals’ relative positions in the reactivity series.<br />Similarities :<br />Differences :<br />
  21. 21. Electrolysis in Industry<br />Aluminium extraction :-<br />Aluminium cell diagram <br />
  22. 22. Starter<br />5 elements<br />4 compounds<br />3 mixtures<br />2 planets<br />1 reason to be cheerful <br />
  23. 23. Objectives<br />Label an electrolytic cell correctly.<br />Investigate electrolysis of Yen <br />
  24. 24. Economic Importance of Salt<br />
  25. 25. Testing for Gases<br />Chlorine<br />Hydrogen<br />Oxygen<br />
  26. 26. What is Electrolysis ?<br />Electrolysis is the ropescs by which ionic substances are broken down intorempislsubstances using electricity. During electrolysis, atemls and gases may form at the electrodes.<br />
  27. 27. Coating Coins<br /><br />
  28. 28. Products of Electrolysis<br />We can use the reactivity series including Hydrogen to predict what our products of electrolysis in aqueous solution will be.<br />
  29. 29. Starter Fun Quiz <br /><br />
  30. 30. Objectives<br />Review anode and cathode reactions in aqueous solution.<br />Industrial applications of electrolysis.<br />Homework: write 100 words on industrial applications of electrolysis , including the Chlor –Alkali industry, and purification of Cu.<br />
  31. 31. Directions<br />Extract salt from your ‘rock’.<br />Make an aqueous solution.<br />Electrolyse the solution, collecting any gases produced.<br />Identify the gases by using an apprpopriate test.<br />Record your results in a table.<br />YOU MUST INCLUDE: diagram of cell, half ion equations, and a reasons why you made the products you did <br />