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Topic 7 - Corrosion. Topic 7 Corrosion Lesson 1/2 These outcomes relate to the PowerPoint Slides 1-4 on Corrosion.

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Presentation on theme: "Topic 7 - Corrosion. Topic 7 Corrosion Lesson 1/2 These outcomes relate to the PowerPoint Slides 1-4 on Corrosion."— Presentation transcript:

1 Topic 7 - Corrosion

2 Topic 7 Corrosion Lesson 1/2 These outcomes relate to the PowerPoint Slides 1-4 on Corrosion

3 Topic 7 CorrosionLesson 1/2 What is corrosion? What is corrosion? Do all metals corrode? Do all metals corrode? What term is used for iron corroding? What term is used for iron corroding? What causes corrosion? What causes corrosion? What can speed up rusting? What can speed up rusting?

4 Topic 7 CorrosionLesson 1/2 How does this speed up rusting? How does this speed up rusting? What is the formula for the iron compound formed in corrosion? What is the formula for the iron compound formed in corrosion? What ion is formed in the first stage of iron corroding? What ion is formed in the first stage of iron corroding? What type of reaction is this? What type of reaction is this?

5 Topic 7 Corrosion Lesson 2/3 These outcomes relate to the PowerPoint Slides 5-8 on Corrosion

6 Topic 7 CorrosionLesson 2/3 What chemical test can detect the iron rusting? What are the results? What chemical test can detect the iron rusting? What are the results? What ion does the test detect? What ion does the test detect? What is oxidation? What is oxidation? What ion is formed in the first stage of rusting? What ion is formed in the first stage of rusting?

7 Topic 7 CorrosionLesson 2/3 What ion is formed in the second stage of rusting? What ion is formed in the second stage of rusting? What ion is produced when oxygen and water pick up electrons? What ion is produced when oxygen and water pick up electrons? What type of reaction is this? What type of reaction is this? What indicator turns pink with these ions? What indicator turns pink with these ions?

8 Topic 7 Corrosion Lesson 3/4 These outcomes relate to the PowerPoint Slides on Corrosion

9 Topic 7 Corrosion Lesson 3/4 When iron is connected to copper in a cell, why does it rust? When iron is connected to copper in a cell, why does it rust? How can this be shown by experiment? How can this be shown by experiment? When iron is connected to magnesium in a cell why does it not rust? When iron is connected to magnesium in a cell why does it not rust? How can you tell by experiment? How can you tell by experiment?

10 Topic 7 Corrosion Lesson 4/5 At this point consolidate all you know so far using Slide 15 and Assessment 12.2 from the pink textbook

11 Topic 7 Corrosion Lesson 5/6 These outcomes relate to the PowerPoint Slides on Corrosion

12 Topic 7 Corrosion Lesson 5/6 What ways can iron be physically protected? What ways can iron be physically protected? Why, if tin is scratched, does iron rust faster? Why, if tin is scratched, does iron rust faster? In electroplating, what terminal is iron coated with a metal? In electroplating, what terminal is iron coated with a metal? What type of reaction occurs here? What type of reaction occurs here?

13 Topic 7 Corrosion Lesson 6/7 These outcomes relate to the PowerPoint Slides on Corrosion

14 Topic 7 Corrosion Lesson 6/7 What ways can iron be chemically protected? What ways can iron be chemically protected? What is galvanising? What is galvanising? Why can galvanising supply physical and chemical protection? Why can galvanising supply physical and chemical protection? What metal is generally used in sacrificial protection? What metal is generally used in sacrificial protection?

15 Topic 7 Corrosion Lesson 6/7 In terms of electrons, why is iron protected by coating with zinc or placing close to magnesium? In terms of electrons, why is iron protected by coating with zinc or placing close to magnesium?

16 Topic 7 Corrosion Lesson 7/8 At this point consolidate all you Know so far using Slide 22 and Assessment 12.1 from the pink textbook

17 Topic 7 Corrosion Lesson 8/9 No Power Point exists for the last few learning outcomes. Relates to Workbook 7.9 Core

18 Topic 7 CellsLesson 8/9 What is a cell? What is a cell? What is an ion-bridge needed for? What is an ion-bridge needed for? Which way do electrons flow when zinc is connected to a carbon rod in an acid solution? Which way do electrons flow when zinc is connected to a carbon rod in an acid solution? What type of reaction is this? What type of reaction is this?

19 Topic 7 CellsLesson 8/9 Can you write this ion-electron equation? Can you write this ion-electron equation? What is happening to the hydrogen ions? What is happening to the hydrogen ions? What type of reaction is this? What type of reaction is this? Can you write this ion-electron equation? Can you write this ion-electron equation?

20 Topic 7 CellsLesson 8/9 What type of rods can connect non-metal solutions together? What type of rods can connect non-metal solutions together? When iodine solution is connected to the sulphite ion solution, what happens to the iodine? When iodine solution is connected to the sulphite ion solution, what happens to the iodine? Can you write the ion-electron equation for this? Can you write the ion-electron equation for this?

21 Topic 7 CellsLesson 8/9 What type of reaction is this? What type of reaction is this? What happens to the sulphite ion? What happens to the sulphite ion? Can you write the ion-electron equation for this? Can you write the ion-electron equation for this? What type of reaction is this? What type of reaction is this?


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