WATER AND HYDROGEN

Burning candle wax in air.

By the end of the lesson, the learner should be able to:



Test for the products of burning candle wax in air.

Teacher demonstrations;
Discussion.

Candles, lime water.

K.L.B.
BOOK I
PP. 91-92

WATER AND HYDROGEN

Reaction of cold water with metals.
Reaction of steam with metals.

By the end of the lesson, the learner should be able to:
Identify products of reaction of cold water with metals.
Identify products of reaction of steam with metals.
Recall the reactivity series of metals based on reaction with water.

Teacher demonstrations;
Discussion;
Write equations.
Teacher demonstrations;
Test for evolved gas;
Discussion;
Write equations.
Review reactivity series.

Calcium, sodium grain.
Magnesium ribbon, sand, iron / steel wool.

K.L.B.
BOOK I
PP. 92-94
K.L.B.
BOOK I
PP. 94-96

WATER AND HYDROGEN

Hydrogen. - lab preparation.

By the end of the lesson, the learner should be able to:
Describe laboratory preparation of hydrogen.

Teacher demonstrations;
Discussion.

Zinc granules,
dil HCl,
conc. sulphuric acid.

K.L.B.
BOOK I
P. 97

WATER AND HYDROGEN

Hydrogen. - physical properties.

By the end of the lesson, the learner should be able to:
State physical properties of hydrogen.

Probing questions and discussion.

Zinc granules,
dil HCl,
conc. sulphuric acid, litmus papers.

K.L.B.
BOOK I
PP. 97-98

WATER AND HYDROGEN

Hydrogen as a reducing agent.
Burning hydrogen in air.

By the end of the lesson, the learner should be able to:
Describe an experiment to show reducing properties of hydrogen.
Identify products of burning hydrogen in air.

Teacher demonstration;
Discussion;
Write equations.

Teacher demonstration;
Discussion.

Copper (II) oxide, anhydrous Copper (II) sulphate., dry hydrogen.
Anhydrous calcium chloride,
hydrogen, U tube, ice cold water.

K.L.B.
BOOK I
PP. 99-101
K.L.B.
BOOK I
PP. 101-102

WATER AND HYDROGEN

Uses of hydrogen.

By the end of the lesson, the learner should be able to:
State uses of hydrogen.

Probing questions;
Open discussion.

TEXT BOOK

K.L.B.
BOOK I
PP. 102-103

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Atomic and mass numbers.

By the end of the lesson, the learner should be able to:


Name the subatomic particles in an atom.
Define atomic number and mass number of an atom.
Represent atomic and mass numbers symbolically.

Exposition on new concepts;
Probing questions;
Brief discussion.

text book

K.L.B.
BOOK II

PP. 1-3

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

First twenty elements of the periodic table.
Isotopes.
Electronic configuration.

By the end of the lesson, the learner should be able to:
List the first twenty elements of the periodic table.
Write chemical symbols of the first twenty elements of the periodic table.
Represent isotopes symbolically.
Define an energy level.
Describe electronic configuration in an atom.

Expository approach: referring to the periodic table, teacher exposes the first twenty elements.
Writing down a list of first twenty elements of the periodic table.

Exposition ? teacher exposes new concepts about electronic configuration.
Written exercise.

Periodic table.
Periodic table.

K.L.B.
BOOK II

PP. 1-3
K.L.B.
BOOK II
P. 4





PP. 5-9

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Electronic configuration in diagrams.

By the end of the lesson, the learner should be able to:
Represent electronic configuration diagrammatically.

Supervised practice;
Written exercise.

text book

K.L.B.
BOOK II
PP. 5-8

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Periods of the periodic table.

By the end of the lesson, the learner should be able to:
Identify elements of the same period.

Exposition ? Definition of a period.
Q/A: Examples of elements of the same period.

Periodic table.

K.L.B. BOOK IIP. 9

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Groups of the periodic table.
R.M.M. and isotopes.

By the end of the lesson, the learner should be able to:
Identify elements of the same period.
Calculate R.M.M. from isotopic composition.

Exposition ? definition of a group.
Q/A: examples of elements of the same group.
Supervised practice involving calculation of RMM from isotopic composition.

Periodic table.
text book

K.L.B. BOOK IIP. 9
K.L.B. BOOK IIPP. 11-13

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Positive ions representation.

By the end of the lesson, the learner should be able to:
To represent formation of positive ions symbolically.

Diagrammatic representation of cations.

Chart  ion model.

K.L.B. BOOK IIP 16

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Negative ions and ion formation.

By the end of the lesson, the learner should be able to:
To define an anion.
To describe formation of negative ions symbolically.

Teacher gives examples of stable atoms.
Guided discovery of formation of negative ions.
Diagrammatic representation of anions.

Chart  ion model.

K.L.B. BOOK IIP 17

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Valencies of metals.
Valencie of non-metals.

By the end of the lesson, the learner should be able to:
Recall valencies of metals among the first twenty elements in the periodic table.
Recall valencies of non-metals among the first twenty elements in the periodic table.

Q/A to review previous lesson;
Exposition;
Guided discovery.

Periodic table.

K.L.B. BOOK IIP 17

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Valencies of radicals.

By the end of the lesson, the learner should be able to:
Define a radical.
Recall the valencies of common radicals.

Exposition ? teacher defines a radical, gives examples of radicals and exposes their valencies.
Students draw a table of radicals and their valencies.

text book

K.L.B. BOOK IIP 18

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Oxidation number.

By the end of the lesson, the learner should be able to:
Define oxidation number.
Predict oxidation numbers from position of elements in the periodic table.

Q/A: Valencies.
Expose oxidation numbers of common ions.
Students complete a table of ions and their oxidation numbers.

The periodic table.

K.L.B. BOOK IIvP 18

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Electronic configuration, ion formed, valency and oxidation number
Chemical formulae of compounds. - Elements of equal valencies.

By the end of the lesson, the learner should be able to:
Relate electronic configuration, ion formed, valency and oxidation number of different elements.
To derive the formulae of some compounds involving elements of equal valencies.

Written exercise;
Exercise review.
Discuss formation of compounds such as NaCl, MgO.

text book

K.L.B. BOOK IIP 18
K.L.B. BOOK IIPP 19-20

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Chemical formulae of compounds. -Elements of unequal valencies.

By the end of the lesson, the learner should be able to:
To derive the formulae of some compounds involving elements of unequal valencies.

Discuss formation of compounds such as MgCl2
Al (NO3)3

text book

K.L.B. BOOK IIPP 19-20

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Chemical formulae of compounds. -Elements of variable valencies.

By the end of the lesson, the learner should be able to:
To derive the formulae of some compounds involving elements of variable valencies.

Discuss formation of compounds such as
-Copper (I) Oxide.
-Copper (II) Oxide.
-Iron (II) Sulphate.
-Iron (III) Sulphate.

text book

K.L.B. BOOK IIP 20

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Chemical equations.
Balanced chemical equations.

By the end of the lesson, the learner should be able to:
To identify components of chemical equations.

To balance chemical equations correctly.

Review word equations;
Exposition of new concepts with probing questions;
Brief discussion.
Exposition;
Supervised practice.

text book

K.L.B. BOOK IIPP 21-23
K.L.B. BOOK IIPP 24-25

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE

Balanced chemical equations.(contd)

By the end of the lesson, the learner should be able to:
To balance chemical equations correctly.

Supervised practice;
Written exercise.

text book

K.L.B. BOOK IIPP 25-8

THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
CHEMICAL FAMILIES

Balanced chemical equations.(contd)
Chemical properties of alkaline earth metals. Reaction of alkaline earth metals with oxygen.
Chemical properties of alkaline earth metals. Reaction of alkaline earth metals with water.

By the end of the lesson, the learner should be able to:
To balance chemical equations correctly.
To describe reaction of alkaline earth metals with oxygen

Supervised practice;
Written exercise.
Q/A: Review reactions of Mg, Ca, with oxygen.
The corresponding word and then chemical equations are then written and their correctness verified by the teacher.

text book
text book
Some alkaline earth metals.

K.L.B. BOOK IIPP 25-8
K.L.B. BOOK IIP. 38

CHEMICAL FAMILIES

Reaction of alkaline earth metals with chlorine gas.

By the end of the lesson, the learner should be able to:
To write balanced equations for reaction of alkaline earth metals with chlorine gas.

Teacher demonstration- Reaction of sodium with chlorine in a fume chamber.
Q/A: Students to predict a similar reaction between potassium and chlorine.
Word and balanced chemical equations for various reactions.
Supervised practice.

Sodium, chlorine.

K.L.B. BOOK II P. 41

CHEMICAL FAMILIES

Reaction of alkaline earth metals with dilute acids.

By the end of the lesson, the learner should be able to:
To write balanced equations for reactions of alkaline earth metals with dilute acids.

Changing word to chemical equations.
Supervised practice.

revision book

K.L.B. BOOK II PP. 43

CHEMICAL FAMILIES

Chemical formulae of alkaline earth metals.
Uses of some alkaline earth metals and their compounds.

By the end of the lesson, the learner should be able to:
Write chemical formulae for compounds of alkaline earth metals.
Explain formation of hydroxides, oxides and chlorides of alkaline earth metals.
State uses of alkaline earth metals.

Exercise: Completing a table of hydroxides, oxides and chlorides of alkaline earth metals.
Discuss combination of ions of alkaline earth metals with anions.

Descriptive approach: Teacher elucidates uses of alkaline earth metals.

text book

K.L.B. BOOK II PP. 45-47
K.L.B. BOOK II PP. 45-47

CHEMICAL FAMILIES

Halogens. Physical properties of halogens.
Comparative physical properties of halogens.

By the end of the lesson, the learner should be able to:
Identify halogens in the periodic table.
Give examples of halogens.
Identify physical states of halogens.

Teacher demonstration: - To examine electrical properties of iodine, solubility in water of chlorine.

Iodine crystals, electrical wire, a bulb.
text book

KLB BK II
P. 47

CHEMICAL FAMILIES

Chemical properties of halogens.
Equations of reaction of halogens with metals.

By the end of the lesson, the learner should be able to:
To describe laboratory preparation of chlorine gas.

To describe reaction of halogens with metals.

Teacher demonstration: - preparation of chlorine gas.
Reaction of chlorine and iron wool.
Reaction of bromine and iron wool.
Reaction of iodine and iron wool.
Observe the rate of these reactions; hence deduce order of their reactivity of halogens.

Chlorine, iron wool, bromine.
text book

K.L.B. BOOK IIPP. 48-50

CHEMICAL FAMILIES

Reaction of halogens with water.
Some uses of halogens and their compounds.

By the end of the lesson, the learner should be able to:
To describe reaction of halogens with water and the results obtained.
To state uses of halogens and their compounds.

Bubbling chlorine gas through water.
Carry out litmus test for the water.
Explain the observations.

Teacher elucidates uses of halogens and their compounds.

Chlorine gas, litmus papers.
text book

K.L.B. BOOK II P. 51
K.L.B. BOOK II pp 52

CHEMICAL FAMILIES

Noble Gases. Comparative physical properties of noble gases.
Uses of noble gases.

By the end of the lesson, the learner should be able to:
To describe physical properties of noble gases.
To explain physical properties of noble gases.

Make A comparative analysis of tabulated physical properties of noble gases.

text book

  K.L.B. BOOK IIPP. 52-53