Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

G10 electricity in chemistry

1,055 views

Published on

Cambridge IGCSE Scienec Syallbus

Published in: Technology, Business
  • Be the first to comment

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 />http://www.chemguide.co.uk/inorganic/redox/definitions.html<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 />http://www.absorblearning.com/media/attachment.action?quick=tw&att=2142<br />
  16. 16. Thermite<br />http://www.youtube.com/watch?v=rdCsbZf1_Ng<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 />http://www.youtube.com/watch?v=rdCsbZf1_Ng<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 />http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa/ions/electrolysisrev4.shtml<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 />http://www.bbc.co.uk/apps/ifl/schools/gcsebitesize/science/quizengine?quiz=add_aqa_electrolysistest&templateStyle=science<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 />

×