METALS

Ores of some metals.
Occurrence and extraction of sodium.

By the end of the lesson, the learner should be able to:
Name the chief ores of some metals.
Describe occurrence and extraction of sodium.

Exposition and brief discussion.
Oral questions on electrolysis and equations at electrodes.
Brief discussion on occurrence and extraction.

Chart: Down?s cell.

K.L.B. BK IV
Pages 168-9

METALS

Occurrence and extraction of aluminium.
Occurrence and extraction of iron.

By the end of the lesson, the learner should be able to:
Describe occurrence and extraction of aluminium.
Describe occurrence and extraction of iron.

Brief discussion.
Write relevant chemical equations.

student book
Chart: Blast furnace.

K.L.B. BK IV
Pages 171-3

METALS

Occurrence and extraction of zinc.

By the end of the lesson, the learner should be able to:
Describe occurrence and extraction of zinc by electrolysis and reduction methods.

Brief discussion.
Write relevant chemical equations.

Flow chart: extraction of Zinc.

K.L.B. BK IV
Pages 175-9

METALS

Extraction of lead.

By the end of the lesson, the learner should be able to:
Explain how lead is extracted.

Q/A & brief discussion.
Write balanced chemical equations leading to extraction of lead.

Flow chart: extraction of lead.

K.L.B. BK IV
Pages 179-80

METALS

Occurrence and extraction of copper.
Physical properties of some metals.
Reaction of metals with oxygen.

By the end of the lesson, the learner should be able to:
Describe extraction of copper.
State general properties of metals.
Explain the difference in physical properties of metals.
Explain effect of burning metals in air.

Q/A & brief discussion.
Write balanced chemical equations leading to extraction of copper.
Compare physical properties of some metals as summarized in a chart.
Q/A & discussion based on physical properties.
Teacher demonstration / Group experiments.
Burning some metals in air.
Write relevant equations.
Brief discussion.

Flow chart: extraction of copper.
student book
Common lab. metals.

K.L.B. BK IV
Pages 181-183
K.L.B. BK IV
Pages 184-6

METALS

Reaction of metals with cold water and steam.

By the end of the lesson, the learner should be able to:
Describe reaction of metals with cold water and steam.

Arrange the metals in order of reactivity with cold water and steam.

Class experiments:
Investigate reaction of some metals with cold water and steam.
Analyse the results.

Metals: Al, Zn, Fe, Cu.

K.L.B. BK IV
Pages 186-9

METALS

Reaction of metals with cold water and steam.

By the end of the lesson, the learner should be able to:
Describe reaction of metals with cold water and steam.

Arrange the metals in order of reactivity with cold water and steam.

Class experiments:
Investigate reaction of some metals with cold water and steam.
Analyse the results.

Metals: Al, Zn, Fe, Cu.

K.L.B. BK IV
Pages 186-9

METALS

Reaction of metals with chlorine.

By the end of the lesson, the learner should be able to:
Describe the reaction of metals with chlorine.

Teacher demonstration in a fume cupboard / in the open.
Investigate reaction of metals with chorine
Write corresponding equations.

Metals: Al, Zn, Fe, Cu.

K.L.B. BK IV
Pages 189-191

METALS

Reaction of metals with acids.
Uses of metals.
Environmental effects of extraction of metals.

By the end of the lesson, the learner should be able to:
Describe and explain reaction of metals with acids.
State uses of some metals and alloys.
Identify some environmental effects of extraction of metals.

Group experiments: investigate reaction of metals with dilute acids.
Teacher demonstration: investigate reaction of metals with concentrated acids.
Discuss the observations made and write relevant chemical equations.
Q/A & brief discussion;
Uses of Sodium, Aluminium, Zinc, Iron and Copper & some alloys.
Oral questions and open discussion.

Assignment / Topic review.

Metals: Al, Zn, Fe, Cu.
Acids; HCl, HNO3, H2SO4.
student book

K.L.B. BK IV
Pages 191-4
K.L.B. BK IV
Pages 197-8