SENIOR TWO
TERM I
TOPIC 10:
REACTIONS OF METALS WITH OXYGEN- REACTIVITY SERIES FOR METALS
DURATION: 6 Periods
GENERAL OBJECTIVE: By the end of this topic the learner should be able
to arrange metals in order of their reactivity with oxygen and apply the
principles to different situations.
SPECIFIC OBJECTIVE |
CONTENT |
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Learners
should be able to:
·
Define the term affinity.
·
Describe the reaction between a
given metal and metal oxide.
·
Explain the reaction between a
given metal and metal oxide.
·
State the order of elements in
the reactivity series.
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·
Definition of affinity for
oxygen.
·
Displacement reactions.
·
Competition reactions of the
metals for oxygen
·
Experiments to demonstrate the
reactions of metals with metal oxides e.g. CO2/Mg, PbO/Mg
·
The reactivity series ( K, Na,
Ca, Mg, Al, C, Zn)
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TOPIC 11: WATER DURATION: 6 Periods
GENERAL OBJECTIVE: By the end of this topic the learner should be able
to state the properties of water.
SPECIFIC OBJECTIVE |
CONTENT |
Learners
should be able to:
·
State the composition of water.
·
Test for the products of burning
organic matter.
·
Explain the experiment showing
that water contains hydrogen.
·
State the products of reaction
of water and steam with different metals.
·
List the reactivity series
obtained from metal/water reaction. |
·
Composition of water.
·
The water cycle.
·
Burning of organic matter
(energy source).
·
Water as an oxide of
hydrogen.(Burning hydrogen and a candle in air)
·
Reactions of metals with
water/steam.( Na, Ca, Mg with water and Mg, Zn, Fe with steam)
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TOPIC
12: HYDROGEN
DURATION:
6 Periods
GENERAL OBJECTIVE: By the end of this topic the learner should be able
to prepare hydrogen in the laboratory and state its physical and chemical
properties.
SPECIFIC OBJECTIVE |
CONTENT |
Learners
should be able to:
·
Prepare and test for hydrogen in
the laboratory.
·
State the physical and chemical
properties of hydrogen.
·
Outline the uses of hydrogen.
·
Explain oxidation as gain of
oxygen and reduction as loss of oxygen with reference to metal oxide-hydrogen
reactions. |
·
Laboratory preparation of
hydrogen.
·
Test for hydrogen
·
Reactions of hydrogen gas.
·
Uses of hydrogen gas: -
-
manufacture of margarine
-
weather balloons.
-
manufacture of ammonia.
·
Oxidation and reduction in terms
of gaining oxygen and losing hydrogen.(use copper (II) oxide, hydrogen
reduction)
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TOPIC 13: ATOMIC STRUCTURES DURATION: 9 Periods
GENERAL OBJECTIVE: By the end of this topic the learner should be able to describe
the structure of an atom and write the electronic configuration of the first
twenty elements in
the Periodic Table.
SPECIFIC OBJECTIVE |
CONTENT |
Learners
should be able to:
·
Define an atom.
·
Name the particles of the atom.
·
Draw the simple atomic
structure.
·
State the charges on each of the
particles of the atom.
·
Define atomic number, relative
atomic mass and isotope.
·
Write electronic configuration of
various elements (1st 20 elements in the Periodic Table).
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·
Definition of atom
·
Particles of an atom
·
Draw the structure of an atom.
·
Definition of atomic number and
mass number.
·
Definition of isotopes, relative
atomic mass, and examples and their significance.
·
Electronic configuration of the
1st 20 elements in periodic table.
·
Positive and negative charges
(should be introduced through simple electrostatics, experiments with
charges, rods and spheres.) |
TOPIC 14:
THE PERIODIC TABLE DURATION:
3 Periods
GENERAL OBJECTIVE: By the end of this topic the learner should be able
to locate the position of the different elements in the Periodic Table using
electronic configuration.
SPECIFIC OBJECTIVE |
CONTENT |
Learners
should be able to:
·
Define the Periodic Table.
·
Describe the history of the
periodic time.
·
Arrange the first 20 elements in
the Periodic Table.
·
Identify metals, non-metals and
noble gases in relation to outermost electrons.
·
Describe the Period and group.
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·
Definition of the Periodic Table
and its history.
·
Groups in the Periodic Table
(i.e. I, II, VII, O) and periods.
·
Arrangement of the 1st
20 elements in the Periodic Table. |
TERM II
TOPIC 15:
IONS AND IONIC COMPOUNDS DURATION:
6 Periods
GENERAL
OBJECTIVE: By the end of this topic the
learner should be able to predict the type of ion formed from the electronic
arrangement of
the element.
SPECIFIC OBJECTIVE |
CONTENT |
Learners
should be able to:
·
Define an ion.
·
Describe an octet and duplet.
·
Outline common ions.
·
Determine valencies of different
elements.
·
Write simple chemical formulae.
·
Define multivalency.
·
Define a radical.
·
Identify elements that are
multivalent.
·
Describe how simple ionic
compounds are formed (e.g. sodium chloride).
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·
Definition of an ion.
·
The characteristics feature of
the outermost energy level (i.e. octet and duplet).
·
Formation of ions and
determination of valencies.
·
The reaction between sodium and
chlorine.
·
The reaction between magnesium
and oxygen.
·
Common ions (e.g. Li+, Na+, Mg2+, Ca2+,
Al3+, etc. F-, Cl-,
NO3-, CO32-, etc.
·
Formulae of ionic compounds. |
TOPIC 16: CHEMICAL
FAMILIES: PATTERNS IN PROPERTIES DURATION:
9 Periods
GENERAL OBJECTIVE: By the end of this topic the learner should be able
to explain the reactions of the chemical families in terms of their electronic
arrangement.
SPECIFIC OBJECTIVE |
CONTENT |
Learners
should be able to:
·
State the specified reactions of
the alkali, alkaline-earth metals and halogens.
·
Describe the difference in
reactivity within these chemical families
·
State the properties of noble
gas family and its un-reactivity.
·
Predict the reactions and
reactivity of elements within each family on qualitative basis.
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·
Reaction of alkali metals (Li,
Na, K) with air, water and chlorine.
·
Reaction of alkaline- earth
metals (Ca, Mg,) with air, water, chlorine and dilute acids.
·
Reaction of halogens (Cl2, Br2,
I2) with sodium, water (bleaching action), zinc powder, sodium
hydroxide solution.
·
Noble gases.
-
recognize their low reactivity
based on their electronic configuration
·
Note: Word equation should be
used though formulae of simple compounds and elements may be given. |
TOPIC 17: BONDING DURATION:
6 Periods
GENERAL OBJECTIVE: By the end of this topic the learner should be able to
differentiate between electrovalent, covalent, dative and metallic bonding
SPECIFIC OBJECTIVE |
CONTENT |
Learners
should be able to:
·
Define bonding.
·
Describe the formation of:
-
electrovalent bond.
-
covalent bond.
-
metallic bond
·
Identify different elements
which form the above bonds.
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·
Definition of bonding.
·
Description of electrovalent,
covalent, dative and metallic bonding.
·
Differences between
electrovalent, covalent, metallic and dative bonding. |
TOPIC 18: CHEMICAL EQUATIONS DURATION:
9 Periods
GENERAL OBJECTIVE: By the end of this topic the learner should be able
to write balanced equations.
SPECIFIC OBJECTIVE |
CONTENT |
Learners
should be able to:
·
Define word equation.
·
Write word equations.
·
Define formulae equation.
·
Write formulae equations.
·
Balance formulae equations.
|
·
Definition of word equation and
formulae equation.
·
Word equations.
·
Formulae (chemical) equations.
·
Balancing formulae (chemical
equation. |
TERM: III
TOPIC 19: ACIDS, BASES AND INDICATORS DURATION: 15 Periods
GENERAL OBJECTIVE: By the end of this topic the learner should be able
to differentiate between acids and bases by use of indicators, and outline the
application of acid-base neutralization reactions.
SPECIFIC OBJECTIVE |
CONTENT |
learners
should be able to:
·
Define an acid, base and
indicator.
·
Prepare and use plant extracts
as acid – base indicators.
·
Use universal indicator to
determine the ph of solution.
·
State characteristics of acids
and bases.
·
Give examples of acids and
bases.
·
Outline some applications of
acid – base neutralization.
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·
Definition of acid, base and
indicator.
·
Indicators
·
Acidic, neutral and
basic/alkaline solution.
·
Strength of acids and bases.
·
Simple properties of mineral
acids. test solutions: nh4cl,
(nh4)2 so4,
nh3, naoh, h2so4, etc.)
·
Neutralization reactions of
acids and bases.
·
application of acid – base
neutralization reactions |
TOPIC 20:
SALTS (IONIC COMPOUNDS) DURATION: 9 Periods
GENERAL OBJECTIVE: By the end of this topic the learner should be able
to prepare simple salts in the laboratory using the appropriate method.
SPECIFIC OBJECTIVE |
CONTENT |
Learners
should be able to:
·
Define salt.
·
Identify soluble and insoluble
salts.
·
Select an appropriate method for
preparation of a particular salt.
·
Explain the terms solution,
saturated solution, crystallization, neutralization and precipitation.
·
Describe and explain from
experimental observations, the action of heat on various salts.
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·
Definition of salt.
·
Normal salts and acid salts.
·
Soluble and insoluble salts.
·
Solution.
·
·
Crystallization by evaporation.
·
Preparation of soluble salts.
·
Preparation of insoluble
salts-double decomposition.
·
Preparation of salts by direct
synthesis.
·
Hydrated salts.
·
The effect of heat on salts. |
TOPIC 21: THE EFFECT OF ELECTRICITY ON SUBSTANCES DURATION: 6 Periods
GENERAL OBJECTIVE: By the end of this topic the learner should be able
to recognize that electrolysis is a means of obtaining elements from chemical compounds.
SPECIFIC OBJECTIVE |
CONTENT |
Learners
should be able to:
·
Define conductor/non-conductor
and electrolyte/ non-electrolyte.
·
State the relationship between
electrolytes, non-electrolytes and the particles they contain (ions,
molecules).
·
Name the products of
electrolysis of simple binary electrolytes.
·
Explain that, electrolysis is a
means of obtaining elements from chemical compounds.
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·
Definition of conductor,
non-conductor, electrolyte and non – electrolyte.
·
Definition of cathode and anode.
·
Which substances conduct
·
Tests for conduction by solids
(metals, non-metals, plastic, wood).
·
Solution: sugar, urea, sodium
chloride and copper (II) chloride, dilute mineral acids and molten
substances.
·
Electrolysis of ionic compounds
(CuCl2, HCl, PbBr2.)
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