Topic 7 - Corrosion.

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Presentation transcript:

Topic 7 - Corrosion

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

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

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

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

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

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

Topic 7 Corrosion Lesson 3/4 These outcomes relate to the PowerPoint Slides 11-14 on Corrosion

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

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

Topic 7 Corrosion Lesson 5/6 These outcomes relate to the PowerPoint Slides 16-19 on Corrosion

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

Topic 7 Corrosion Lesson 6/7 These outcomes relate to the PowerPoint Slides 20-22 on Corrosion

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

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

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

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

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

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

Topic 7 Cells Lesson 8/9 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? Can you write the ion-electron equation for this?

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