Topic 5 Learning Outcomes

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Topic 5 Learning Outcomes

  1. 1. Topic 5 Acids in Action
  2. 2. Topic 5.1 Acids in Action <ul><li>What does the pH scale measure? </li></ul><ul><li>What pH numbers refer to acids ? </li></ul><ul><li>What pH numbers refer to alkalis ? </li></ul><ul><li>What is the pH number for a neutral solution? </li></ul>
  3. 3. Topic 5.1 Acids in Action <ul><li>What colour does the pH paper turn with a strong acid? </li></ul><ul><li>What colour does the pH paper turn with a weak acid? </li></ul><ul><li>What colour does the pH paper turn with a strong alkali? </li></ul><ul><li>What colour does the pH paper turn with a neutral solution? </li></ul>
  4. 4. Topic 5.1 Acids in Action <ul><li>What happens to the pH number when an acid is diluted? </li></ul><ul><li>What happens to the pH when an alkali is diluted ? </li></ul><ul><li>What pH is the limit for dilution of either an acid or alkali? </li></ul>
  5. 5. Topic 5.1 Acids in Action <ul><li>What are …. </li></ul><ul><li>three common acids found in the household? </li></ul><ul><li>three common alkalis found in the household? </li></ul><ul><li>three common neutral solutions found in the household? </li></ul>
  6. 6. Topic 5.1 Ext Acids in Action <ul><li>What is the formula for ... </li></ul><ul><li>hydrochloric acid? </li></ul><ul><li>nitric acid? </li></ul><ul><li>sulphuric acid </li></ul><ul><li>phosphoric acid? </li></ul><ul><li>carbonic acid? </li></ul><ul><li>LEARN THESE FORMULAE…………. </li></ul>
  7. 7. Topic 5.1 Ext Acids in Action <ul><li>Can acids conduct electricity ? </li></ul><ul><li>What kind of bonding do acids have? </li></ul><ul><li>What ion is common to all acids? </li></ul><ul><li>Is this ion positive or negative? </li></ul><ul><li>What ions are present in hydrochloric acid, sulphuric acid and nitric acid? </li></ul>
  8. 8. Topic 5.1 Ext Acids in Action <ul><li>Acids have a higher concentration of which ion ? </li></ul><ul><li>Alkalis have a higher concentration of which ion ? </li></ul><ul><li>Diluting an acid reduces the number of which ions? </li></ul>
  9. 9. Topic 5.2 Acids in Action <ul><li>How is an acid made? </li></ul><ul><li>How is an alkali made? </li></ul><ul><li>What condition/property is needed to make an alkali? </li></ul><ul><li>What type of oxides do not form alkalis? </li></ul><ul><li>What pH do these oxides give? </li></ul><ul><li>What ion is common to all alkalis ? </li></ul>
  10. 10. Topic 5.2 Acids in Action <ul><li>What is the formula for ... </li></ul><ul><li>sodium hydroxide? </li></ul><ul><li>calcium hydroxide? </li></ul><ul><li>potassium hydroxide </li></ul><ul><li>LEARN THESE FORMULAE…………. </li></ul>
  11. 11. Topic 5.2 Acids in Action <ul><li>What substance , present in fuels contributes to acid rain? </li></ul><ul><li>What is the gas produced called that causes acid rain? </li></ul><ul><li>What does acid rain do to the environment ? </li></ul>
  12. 12. Topic 5.2 Ext Acids in Action <ul><li>What is the name of the process that can split up an acid back into its elements? </li></ul><ul><li>What element forms at the negative electrode? </li></ul><ul><li>What happens at the negative electrode to produce this element from its ion? </li></ul><ul><li>What is this reaction called? </li></ul>+ + + + - - - - + - - + - + + + + - - -
  13. 13. Topic 5.2 Ext Acids in Action <ul><li>What is a d.c current and why is it used in electrolysis? </li></ul><ul><li>When hydrochloric acid is electrolysed, what forms at the positive electrode? </li></ul><ul><li>What happens at the positive electrode to produce this element? </li></ul><ul><li>What is this reaction called? </li></ul>
  14. 14. Topic 5.2 Ext Acids in Action <ul><li>When sulphuric acid is electrolysed, what forms at the positive electrode? </li></ul><ul><li>What forms at the negative electrode ? </li></ul><ul><li>What is this overall reaction called? </li></ul>
  15. 15. Topic 5.3 Acids in Action <ul><li>Which metals can react with an acid? </li></ul><ul><li>Where in the reactivity series (Data book pg 7) would you find these metals? </li></ul><ul><li>When a metal reacts with an acid what are the products? </li></ul><ul><li>Write out this general equation and LEARN. </li></ul>
  16. 16. Topic 5.3 Acids in Action <ul><li>How could it be proved that hydrogen gas is given off? </li></ul><ul><li>How could the rate of these reactions be increased? </li></ul><ul><li>Why does sulphuric acid react faster than hydrochloric and nitric acid? (CLUE – THINK OF THE FORMULA) </li></ul>
  17. 17. Topic 5.3 Acids in Action <ul><li>What type of metal salt is formed when… hydrochloric acid is used? sulphuric acid is used? nitric acid is used? </li></ul>
  18. 18. Topic 5.3 Ext Acids in Action <ul><li>Copy and complete the following and write balanced formulae equations… </li></ul><ul><li>Magnesium + Hydrochloric </li></ul><ul><ul><ul><ul><ul><li>acid </li></ul></ul></ul></ul></ul><ul><li>Iron + Nitric acid </li></ul><ul><li>3. Zinc+ Sulphuric acid </li></ul>
  19. 19. Topic 5.3 Ext Acids in Action <ul><li>Answers </li></ul><ul><li>Magnesium + Hydrochloric Magnesium + Hydrogen </li></ul><ul><ul><ul><ul><ul><li>acid chloride </li></ul></ul></ul></ul></ul><ul><ul><ul><ul><ul><li>Mg + 2HCl MgCl 2 + H 2 </li></ul></ul></ul></ul></ul><ul><li>Iron + Nitric acid Iron nitrate + hydrogen </li></ul><ul><ul><ul><ul><ul><li>Fe + 2HNO 3 Fe(NO 3 ) 2 + H 2 </li></ul></ul></ul></ul></ul><ul><li>3. Zinc+ Sulphuric acid Zinc sulphate + Hydrogen </li></ul><ul><ul><ul><ul><ul><li>Zn + H 2 SO 4 ZnSO 4 + H 2 </li></ul></ul></ul></ul></ul>
  20. 20. Topic 5.4 Acids in Action <ul><li>What is the name of the reaction when an acid is cancelled by a another substance? </li></ul><ul><li>What is a base ? </li></ul><ul><li>Name three types of base? (THINK OF THE REACTIONS YOU HAVE SEEN FROM 5.4) </li></ul>
  21. 21. Topic 5.4 Acids in Action <ul><li>What are the products formed when a metal oxide reacts with an acid ? </li></ul><ul><li>What are the products formed when a metal carbonate reacts with an acid ? </li></ul><ul><li>Write out these general word equations and LEARN THEM. </li></ul>
  22. 22. Topic 5.4 Ext Acids in Action <ul><li>What gas is produced when a metal carbonate reacts with an acid? </li></ul><ul><li>Why is an excess of metal carbonate added to the acid? </li></ul>Residue Filtrate
  23. 23. Topic 5.4 Ext Acids in Action <ul><li>How do you know when the acid has been completely neutralised? </li></ul><ul><li>What will the filtrate contain? </li></ul><ul><li>What compound is found in the residue ? </li></ul>Residue Filtrate
  24. 24. Topic 5.4 Ext Acids in Action <ul><li>What are the products formed when copper carbonate reacts with sulphuric acid? </li></ul><ul><li>Write the word and balanced formula equation for this reaction… </li></ul><ul><li>Copper + Sulphuric </li></ul><ul><li>carbonate acid </li></ul>
  25. 25. Topic 5.4 Ext Acids in Action <ul><li>ANSWER </li></ul><ul><li>Copper + Sulphuric Copper + Water + Carbon </li></ul><ul><li>carbonate acid sulphate dioxide </li></ul><ul><li>CuCO 3 + H 2 SO 4 CuSO 4 + H 2 0 + CO 2 </li></ul>
  26. 26. Topic 5.4 Ext Acids in Action <ul><li>What are the products formed when copper oxide reacts with hydrochloric acid? </li></ul><ul><li>Write the word and balanced formula equation for this reaction… </li></ul><ul><li>Copper + Hydrochloric </li></ul><ul><li>oxide acid </li></ul>
  27. 27. Topic 5.4 Ext Acids in Action <ul><li>ANSWERS </li></ul><ul><li>Copper + Hydrochloric Copper + Water </li></ul><ul><li>oxide acid chloride </li></ul><ul><ul><ul><ul><ul><li>CuO + 2HCl CuCl 2 + H 2 0 </li></ul></ul></ul></ul></ul>
  28. 28. Topic 5.5 Acids in Action <ul><li>What is the name of the reaction when an acid is cancelled by a another substance? </li></ul><ul><li>What is a base ? </li></ul><ul><li>Name three types of base? (THINK OF THE REACTIONS YOU HAVE SEEN FROM 5.4) </li></ul>
  29. 29. Topic 5.5 Acids in Action <ul><li>Why is a pipette used instead of a measuring cylinder? </li></ul><ul><li>What advantage does a burette have over a pipette? </li></ul>
  30. 30. Topic 5.5 Acids in Action <ul><li>What is the name of the technique in which a burette and pipette are used to neutralise an acid? </li></ul><ul><li>Why is an indicator used? </li></ul><ul><li>What is the curve in the acid or alkali called? </li></ul><ul><li>Where should this curve be when filling a pipette accurately? </li></ul><ul><li>What is meant by concordant results ? </li></ul>
  31. 31. Topic 5.6 Acids in Action <ul><li>What is the name of the reaction in which two solutions react to form an insoluble salt ? </li></ul><ul><li>How can the insoluble product be separated from the mixture? </li></ul><ul><li>Where is information on insoluble salts found? </li></ul><ul><li>What is meant by spectator ions ? </li></ul>
  32. 32. Topic 5.7 Acids in Action <ul><li>What is the formula mass and how is it obtained? </li></ul><ul><li>What is the gram formula mass equal to? </li></ul><ul><li>What is concentration? </li></ul><ul><li>What are the units used? </li></ul><ul><li>TRY CHECKTEST 5.7 OR THE CHEMICAL CALCULATION BOOKLET FOR PRACTICE. </li></ul>
  33. 33. Topic 5.8 Acids in Action <ul><li>What is the equation that relates moles and mass ? </li></ul><ul><li>What is the equation that relates volume, concentration and moles ? </li></ul><ul><li>TRY CHECKTEST 5.8 OR THE CHEMICAL CALCULATION BOOKLET FOR PRACTICE </li></ul>
  34. 34. Topic 5.9 Acids in Action <ul><li>What is the equation used in titrations ? </li></ul><ul><li>TRY CHECKTEST 5.9 OR THE CHEMICAL CALCULATION BOOKLET FOR PRACTICE </li></ul>

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