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| WK | LSN | TOPIC | SUB-TOPIC | OBJECTIVES | T/L ACTIVITIES | T/L AIDS | REFERENCE | REMARKS |
|---|---|---|---|---|---|---|---|---|
| 1 | 2 |
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 |
|
| 1 | 3 |
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
|
First twenty elements of the periodic table.
|
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. |
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. |
Periodic table.
|
K.L.B.
BOOK II PP. 1-3 |
|
| 1 | 4 |
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
|
Isotopes.
Electronic configuration. |
By the end of the
lesson, the learner
should be able to:
Define isotopes. Give examples of isotopes. Represent isotopes symbolically. Define an energy level. Describe electronic configuration in an atom. |
Exposition of definition and examples of isotopes.
Giving examples of isotopes. Exposition ? teacher exposes new concepts about electronic configuration. Written exercise. |
Periodic table.
|
K.L.B.
BOOK II P. 4 PP. 5-8 |
|
| 2 | 1 |
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 |
|
| 2 | 2 |
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
|
|
| 2 | 3 |
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
|
Groups 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 group.
Q/A: examples of elements of the same group. |
Periodic table.
|
K.L.B. BOOK IIP. 9
|
|
| 2 | 4 |
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
|
R.M.M. and isotopes.
|
By the end of the
lesson, the learner
should be able to:
Calculate R.M.M. from isotopic composition. |
Supervised practice involving calculation of RMM from isotopic composition.
|
text book
|
K.L.B. BOOK IIPP. 11-13
|
|
| 3 | 1 |
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
|
Positive ions and ion formation.
|
By the end of the
lesson, the learner
should be able to:
To define an ion and a cation. |
Teacher gives examples of stable atoms.
Guided discovery that metals need to lose one, two or three electrons to attain stability. Examples of positive ions. |
text book
|
K.L.B. BOOK IIPP 14-15
|
|
| 3 | 2 |
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
|
|
| 3 | 3 |
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
|
|
| 3 | 4 |
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
|
Valencies of 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. |
Q/A to review previous lesson;
Exposition; Guided discovery. |
Periodic table.
|
K.L.B. BOOK IIP 17
|
|
| 4 | 1 |
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
|
Valencie of non-metals.
|
By the end of the
lesson, the learner
should be able to:
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
|
|
| 4 | 2 |
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
|
|
| 4 | 3 |
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
|
|
| 4 | 4 |
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
|
Electronic configuration, ion formed, valency and oxidation number
|
By the end of the
lesson, the learner
should be able to:
Relate electronic configuration, ion formed, valency and oxidation number of different elements. |
Written exercise;
Exercise review. |
text book
|
K.L.B. BOOK IIP 18
|
|
| 5 | 1 |
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
|
Chemical formulae of compounds.
- Elements of equal valencies.
|
By the end of the
lesson, the learner
should be able to:
To derive the formulae of some compounds involving elements of equal valencies. |
Discuss formation of compounds such as NaCl, MgO.
|
text book
|
K.L.B. BOOK IIPP 19-20
|
|
| 5 | 2 |
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
|
|
| 5 | 3 |
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
|
|
| 5 | 4 |
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
|
|
| 6 |
Exam |
|||||||
| 7 | 1 |
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
|
Chemical equations.
|
By the end of the
lesson, the learner
should be able to:
To identify components of chemical equations. |
Review word equations;
Exposition of new concepts with probing questions; Brief discussion. |
text book
|
K.L.B. BOOK IIPP 21-23
|
|
| 7 | 2 |
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
|
Balanced chemical equations.
|
By the end of the
lesson, the learner
should be able to:
To balance chemical equations correctly. |
Exposition;
Supervised practice. |
text book
|
K.L.B. BOOK IIPP 24-25
|
|
| 7 | 3 |
THE STRUCTURE OF THE ATOM & THE PERIODIC TABLE
CHEMICAL FAMILIES |
Balanced chemical equations.(contd)
Alkali metals. Atomic and ionic radii of alkali metals |
By the end of the
lesson, the learner
should be able to:
To balance chemical equations correctly. Identify alkali metals. State changes in atomic and ionic radii of alkali metals. |
Supervised practice;
Written exercise. Q/A to reviews elements of group I and their electronic configuration. Examine a table of elements, their symbols and atomic & ionic radii. Discussion & making deductions from the table. |
text book
The periodic |
K.L.B. BOOK IIPP 25-8
|
|
| 7 | 4 |
CHEMICAL FAMILIES
|
Ionisation energy of alkali metals.
|
By the end of the
lesson, the learner
should be able to:
State changes in number of energy levels and ionisation energy of alkali metals. |
Examine a table of elements, number of energy levels and their ionization energy.
Discuss the trend deduced from the table. |
text book
|
K.L.B. BOOK II
|
|
| 8 |
Midterm |
|||||||
| 9 | 1 |
CHEMICAL FAMILIES
|
Physical properties of alkali metals.
|
By the end of the
lesson, the learner
should be able to:
State and explain trends in physical properties of alkali metals. |
Examine a table showing comparative physical properties of Li, Na, and K.
Q/A: Teacher asks probing questions as students refer to the table for answers. Detailed discussion on physical properties of alkali metals. |
Chart ? comparative properties of Li, Na, K.
|
K.L.B. BOOK IIPP 30-31
|
|
| 9 | 2 |
CHEMICAL FAMILIES
|
Physical properties of alkali metals.
|
By the end of the
lesson, the learner
should be able to:
State and explain trends in physical properties of alkali metals. |
Examine a table showing comparative physical properties of Li, Na, and K.
Q/A: Teacher asks probing questions as students refer to the table for answers. Detailed discussion on physical properties of alkali metals. |
Chart ? comparative properties of Li, Na, K.
|
K.L.B. BOOK IIPP 30-31
|
|
| 9 | 3 |
CHEMICAL FAMILIES
|
Chemical properties of alkali metals.
|
By the end of the
lesson, the learner
should be able to:
To describe reaction of alkali metals with water. |
Q/A: Review reaction of metals with water.
Writing down chemical equations for the reactions. Deduce and discuss the order of reactivity down the group. |
text book
|
K.L.B. BOOK IIP. 32
|
|
| 9 | 4 |
CHEMICAL FAMILIES
|
Reaction of alkali metals with chlorine gas.
|
By the end of the
lesson, the learner
should be able to:
To write balanced equations for reaction of alkali 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. |
Sodium, chlorine.
|
K.L.B. BOOK IIP. 33
|
|
| 10 | 1 |
CHEMICAL FAMILIES
|
Compounds of alkali metals.
|
By the end of the
lesson, the learner
should be able to:
Write chemical formulae for compounds of alkali metals. Explain formation of hydroxides, oxides and chlorides of alkali metals. |
Exercise: Completing a table of hydroxides, oxides and chlorides of alkali metals.
Discuss combination of ions of alkali metals with anions. |
text book
|
K.L.B. BOOK II pp 33
|
|
| 10 | 2 |
CHEMICAL FAMILIES
|
Uses of alkali metals.
|
By the end of the
lesson, the learner
should be able to:
State uses of alkali metals. |
Descriptive approach: Teacher elucidates uses of alkali metals.
|
text book
|
K.L.B. BOOK II pp 34
|
|
| 10 | 3 |
CHEMICAL FAMILIES
|
Alkaline Earth metals
Atomic and ionic radii of alkaline earth metals.
|
By the end of the
lesson, the learner
should be able to:
Identify alkaline earth metals. State changes in atomic and ionic radii of alkaline earth metals. |
Q/A: Elements of group I and their electron configuration.
Examine a table of elements, their symbols and atomic & ionic radii. Make deductions from the table. |
Some alkaline earth metals.
|
K.L.B. BOOK II pp 34
|
|
| 10 | 4 |
CHEMICAL FAMILIES
|
Physical properties of alkaline earth metals.
Electrical properties of alkaline earth metals. |
By the end of the
lesson, the learner
should be able to:
State and explain trends in physical properties of alkaline earth metals. To describe electrical properties of alkaline earth metals. |
Examine a table showing comparative physical properties of Be, Mg, Ca.
Q/A: Teacher asks probing questions as students refer to the table for answers. Detailed discussion of physical properties of alkaline earth metals. Teacher demonstration: - To show alkaline metals are good conductors of electric charge. |
Some alkaline earth metals.
Alkaline earth metals. |
K.L.B. BOOK II P. 35
|
|
| 11-12 |
Exam |
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| 13 |
Closing |
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