unit7-learningoutcomes-100304062025-phpapp02.ppt

Corrosion

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 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?

4. Topic 7 Corrosion Lesson 1/2
How does this speed up rusting?
What is the formula for the iron
compound formed in corrosion?
What ionis formed in the first
stage of iron corroding?
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 7Corrosion Lesson 2/3
What chemical testcan 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?

7. Topic 7Corrosion 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?

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

9. 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?

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 16-19 on Corrosion

12. 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?

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

14. 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?

15. Topic 7 Corrosion Lesson 6/7
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 Cells Lesson 8/9
What is a cell?
What is an ion-bridgeneeded for?
Which way do electrons flow when
zinc is connected to a carbon rod in
an acid solution?
What type of reaction is this?

19. 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?
Can you write this ion-electron
equation?

20. Topic 7 Cells Lesson 8/9
What type of rodscan 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?

21. 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?
What type of reaction is this?