Topic 7 - Corrosion
Topic 7 Corrosion
Lesson 1/2
These outcomes relate to the
PowerPoint Slides 1-4 on Corrosion
Topic 7 Corrosion
 What
Lesson 1/2
is corrosion?
 Do all metals corrode?
 What term is used for iron
corroding?
 What causes corrosion?
 What can speed up rusting?
Topic 7 Corrosion
 How
Lesson 1/2
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
 What
Lesson 2/3
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
 What
Lesson 2/3
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
 When
Lesson 3/4
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
 What
Lesson 5/6
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
 What
Lesson 6/7
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
 In
Lesson 6/7
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
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
 What
Lesson 8/9
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
 Can
Lesson 8/9
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?
Topic 7 Cells
 What
Lesson 8/9
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
 What
Lesson 8/9
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?