TERM 1
| WK | PRD | TOPIC | SUB-TOPIC | SPECIFIC OBJECTIVES | TEACHING/ LEARNING ACTIVITIES | TEACHING/ LEARNING RESOURCES | REFERENCES | REMARKS |
| 1 | 1 | Structure of the atom and the periodic table | Structure of the atom | By the end of the lesson, the learner should be able to: -Define an atom -describe the structure of the atom |
⦠Class discussion, describing the atomic structure using Dalton’s theory. ⦠Describing the subatomic particles: protons, electrons and neutrons. |
⦠Chart on models of the atom Spotlight chemistry students Book 1&2 pages 91 | KLB BK 2 pages 1-2 -Longman KCSE Revision page 88 |
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| 2 | Structure of the atom and the periodic table | Atomic characteristics | By the end of the lesson, the learner should be able to: -give names and symbols of the first 20 elements |
⦠writing names and symbols of the first 20 elements of the periodic table | ⦠Periodic table or chart showing the first 20 elements with their correct chemical symbols | -KLB chemistry students Book 2 pages 2-3 -Longman KCSE Revision page 88 |
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| 3&4 | Structure of the atom and the periodic table | By the end of the lesson, the learner should be able to: -define the terms atomic number, mass number, isotopes -calculate the relative atomic mass from relative abundance of isotopes of an element |
⦠Class discussion, doing questions involving calculation of relative atomic masses | KLB chemistry students Book 2 pages 3-4 -Longman KCSE Revision page 89 |
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| 2 | 1 | Structure of the atom and the periodic table | Electron arrangement | By the end of the lesson, the learner should be able to: -write the electronic configuration of the first 20 elements of the periodic table. |
⦠Writing electronic configuration of elements. | KLB chemistry students Book 2 pages 4-5 Spotlight chemistry page 93-94 Longman KCSE Revision page 90 |
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| 2 | Structure of the atom and the periodic table | The periodic table | By the end of the lesson, the learner should be able to: -explain the position of an element in the periodic table in terms of electron arrangement |
⦠Discussion on the modern periodic table |
â¦Periodic table of elements |
KLB chemistry students Book 2 pages 4-5 |
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| 3&4 | Structure of the atom and the periodic table | Formation of ions | By the end of the lesson, the learner should be able to: -predict the type of ion formed from a given electron arrangement of an atom |
⦠Class discussion on formation of ions ⦠Defining Cat ions and Anions ⦠Defining the term ionization energy and electron affinity ⦠Writing electron arrangement of ions |
â¦Periodic table ⦠Chart showing structure of some ions-cations and anions |
KLB chemistry students Book 2 pages12-14 Spotlight page 101-103 -Longman KCSE Revision page 89 |
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| 3 | 1 | Structure of the atom and the periodic table | Valency and oxidation numbers | By the end of the lesson, the learner should be able to: -define the terms valency and oxidation number of an element |
⦠Defining terms :valence and oxidation number ⦠Predicting the oxidation numbers of elements through ion formation |
⦠Chart showing valency and oxidation number of some elements and radicals | -KLB chemistry students Book 2 pages 14-16 -Longman KCSE Revision page 89 Spotlight page 104 |
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| 2 | Structure of the atom and the periodic table | Valency and oxidation numbers of radicals. | By the end of the lesson, the learner should be able to: ⦠Derive valency and oxidation number of an element from atoms; its position in the periodic table. ⦠Name and give formulae of common radicals |
⦠Predicting valency and oxidation number of elements ⦠Defining the term radical ⦠Writing formulae of common radicals |
⦠Table showing valencies of elements and radicals | Klb chemistry Book 2 pages 14-15 -Longman KCSE Revision page 89 Spotlight chemistry pages 105 |
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| 3&4 | Structure of the atom and the periodic table | Chemical formulae | By the end of the lesson, the learner should be able to:
⦠Derive the formulae of some compounds from valencies of elements and radicals |
⦠Writing chemical formulae of compounds
⦠Deriving chemical formulae of compounds |
⦠Chalkboard illustrations | Klb chemistry students Book 2 pages 16-19 Spotlight chemistry pages 106-107 |
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| 4 | 1 | Structure of the atom and the periodic table | Chemical equations | By the end of the lesson, the learner should be able to: ⦠Write simple balanced chemical equations |
⦠Writing and balancing simple chemical equations | ⦠Chalkboard illustrations | Klb bk 2 pages 20- Spotlight pages 107-109 |
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| 2 | Structure of the atom and the periodic table | Revision (Quiz) |
By the end of the lesson, the learner should be able to: ⦠Define an atom. ⦠Name the subatomic particles. ⦠Calculate RAM of elements from isotopic abundances. ⦠Write electronic configuration of elements and ions. ⦠Write and balance equations |
⦠Answering questions on the topic structure of the atom and periodic table | ⦠Question papers | Klb chemistry students Book 2 pages 23-25 -Longman KCSE revision chemistry page 92-97 |
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| 3&4 | Chemical Families: Patterns in properties | Alkali metals | By the end of the lesson, the learner should be able to: ⦠Identify alkali metals. ⦠Describe the electronic arrangement for alkali metals. ⦠State and explain the trends in physical properties of alkali metals. |
⦠Class discussion: ⦠identifying group 1 elements, ⦠writing their electronic configurations ⦠explaining the physicals properties of alkali metals ⦠Experiment to investigate physical properties of group 1 elements( teacher demonstration) |
⦠Chart on properties of alkali metals ⦠Samples of lithium, sodium and potassium |
Klb chemistry students Book 2 pages 26-28 -Longman KCSE revision chemistry pg90 Spotlight chemistry pages 112-113 |
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| 5 | 1 | Chemical Families: Patterns in properties | Alkali metals | By the end of the lesson, the learner should be able to: ⦠Explain the trends down the group for alkali metals in terms of atomic and ionic radius, ease of ion formation and m.p/b.p |
⦠Class discussion on the trends down the group |
⦠Chart showing atomic radius, melting points, boiling points and density for alkali metals | Klb chemistry students Book 2 pages28-29 -Longman KCSE revision chemistry page 90 |
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| 2 | Chemical Families: Patterns in properties | Chemical properties (Reaction with air) |
By the end of the lesson, the learner should be able to: ⦠Describe the chemical properties of alkali metals |
⦠Observing the reaction of alkali metals with air. ⦠Identifying the colour of the flames produced. ⦠Writing chemical equations for the reaction of alkali metals with air |
⦠Pair of tongs. ⦠Pair of scissors. ⦠Deflagrating spoons. ⦠Samples of lithium and sodium. |
KLB chemistry students Book 2 page 29 | ||
| 3&4 | Chemical Families: Patterns in properties | Reaction of alkali metals with water | By the end of the lesson, the learner should be able to: ⦠Describe and explain the reaction of alkali metals with water |
⦠Experiment on the action of cold water on alkali metals. ⦠Observing the reactions. ⦠Writing balanced chemical equations |
⦠Samples of lithium, sodium and potassium(very small grain). ⦠Cold water. ⦠Trough. ⦠Goggles |
KLB chemistry students Book 2 page 30 Longman KCSE revision chemistry page 90 |
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| 6 | 1 | Chemical Families: Patterns in properties | Reaction of alkali metals with chlorine | By the end of the lesson, the learner should be able to: ⦠Describe and explain the reaction of alkali metals with chlorine |
⦠Experiment( teacher demonstration) on action of chlorine on alkali metals ⦠Observing the reactions and writing chemical equations. |
.⦠Fume cupboard. ⦠Dry chlorine gas in a gas jar. ⦠Deflagrating spoon ⦠Samples of lithium and sodium(tiny grain). ⦠Source of heat |
KLB chemistry students Book 2 page 30-31
Longman KCSE revision chemistry page 90 |
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| 2 | Chemical Families: Patterns in properties | Similarities of ions and formulae of hydroxides, oxides and chlorides of alkali metals | By the end of the lesson, the learner should be able to: ⦠Explain the similarities in formulae of compounds by alkali metals |
⦠Class discussion on similarities of chemical formulae | ⦠Chart showing formulae of the compounds of alkali metals | KLB chemistry students Book 2 page 31 32 | ||
| 3&4 | Chemical Families: Patterns in properties | Uses of alkali metals | By the end of the lesson, the learner should be able to: ⦠Describe the uses of alkali metals |
⦠Discussing uses of alkali metals | KLB chemistry students Book 2 page 32 Spotlight chemistry pg 116 |
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| 7 | 1 | Chemical Families: Patterns in properties | Alkaline earth metals | By the end of the lesson, the learner should be able to: ⦠Identify alkaline earth metals. ⦠Describe the electronic arrangement for alkaline earth metals |
⦠Class discussion ⦠identifying group 2 elements ⦠writing their electronic configurations ⦠explaining the physicals properties of alkaline earth metals. |
⦠Chart on properties of alkaline earth metals. ⦠Samples of magnesium and calcium. |
KLB chemistry students Book 2 pages 33 -Longman KCSE revision chemistry page 91 |
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| 2 | Chemical Families: Patterns in properties | Physical properties | By the end of the lesson, the learner should be able to: ⦠Explain the trends in the physical properties of the group 2 elements |
⦠Experiment to investigate physical properties of group 2 elements (teacher demonstratio). ⦠Observing the colour of alkaline earth metals |
⦠Beryllium. ⦠Magnesium. ⦠Calcium. |
KLB chemistry students Book 2 pages 34-36 -Longman KCSE revision chemistry page 91 - 93 |
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| 3&4 | Chemical Families: Patterns in properties Chemical properties | Reaction with water and air | By the end of the lesson, the learner should be able to: ⦠Describe the reaction of alkaline earth metals with air and water |
⦠Reacting the alkaline earth metals with air and water. ⦠Recording the observation. ⦠Writing chemical equations for the reactions. |
⦠Magnesium ribbon. ⦠Calcium metal. ⦠Steel wool for cleaning the metals. ⦠Water. ⦠Source of heat. |
KLB chemistry students Book 2 pages 36- 37 Spotlight chemistry pg 117-118 -Longman KCSE revision chemistry page 91 - 93 |
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| 8 | 1 | Chemical Families: Patterns in properties | Reaction with chlorine | By the end of the lesson, the learner should be able to: ⦠Describe the reaction of alkaline earth metals with chlorine |
⦠Reacting alkaline earth metals with chlorine, ⦠Noting observations and writing equations |
⦠Magnesium ribbon. ⦠Calcium metal. ⦠Source of chlorine in a fume cupboard. ⦠Deflagrating spoon. ⦠Pair of tongs |
KLB chemistry students Book 2 pages 38-39
-Longman KCSE revision chemistry page 91 |
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| 2 | Chemical Families: Patterns in properties | Reaction with dilute acids | By the end of the lesson, the learner should be able to: ⦠Describe the reaction of alkaline-earth metals with dilute acids |
⦠Carrying out experiments to show how alkaline earth metals react with dilute acids | ⦠Test tubes. ⦠Dilute mineral acids, e.g. sulfuric, nitric and hydrochloric acid. ⦠Magnesium ribbon. ⦠Calcium metal. |
KLB chemistry students Book 2 pages 39-40 -Longman KCSE revision chemistry page 91 |
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| 3&4 | Chemical Families: Patterns in properties | Uses of alkaline earth metals | By the end of the lesson, the learner should be able to: ⦠Explain the importance of alkaline earth metals. ⦠Explain the similarities in formulae of alkaline earth metals |
⦠Class discussion on the uses and similarities in formulae of compounds | ⦠Chart showing formulae of the compounds of alkaline earth metals | KLB chemistry students Book 2 pages 41 -Longman KCSE revision chemistry page 91 |
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| 9 | 1 | Chemical Families: Patterns in properties | Halogens | By the end of the lesson, the learner should be able to: ⦠Explain the physical properties of halogens |
⦠Class discussion on appearance and electronic arrangement of halogens | ⦠Chart showing some physical properties of halogens |
KLB chemistry students Book 2 pages 41 -Longman KCSE revision chemistry page 91 |
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| 2 | Chemical Families: Patterns in properties | Trends down the group | By the end of the lesson, the learner should be able to: ⦠Explain the trends in physical properties of the halogens down the group |
⦠Class discussion | ⦠Chart showing the atomic radii, and ionic radii of halogens boiling and melting points | KLB chemistry students Book 2 pages 42-44 -Longman KCSE revision chemistry page 91 |
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| 3&4 | Chemical Families: Patterns in properties | Chemical properties of halogens | By the end of the lesson, the learner should be able to: ⦠Describe the reaction of chlorine with water |
⦠Experiment on reacting chlorine gas with water. ⦠Investigating the bleaching action of chlorine. ⦠Discussion and note taking |
⦠Chlorine gas in a small test tube. ⦠Water in a test tube. ⦠Blue and red litmus papers. |
KLB chemistry students Book 2 pages 48-49 -Longman KCSE revision chemistry page 91 |
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| 10 | 1 | Chemical Families: Patterns in properties | Reaction of halogens with metals | By the end of the lesson, the learner should be able to: ⦠Describe the reaction between halogens and metals |
⦠Experiment to investigate reaction between halogens and metals. ⦠Discussion and note taking. |
⦠Deflagrating spoon. ⦠Some grain of sodium metal. ⦠Iron wool. ⦠Source of chlorine. ⦠Source of heat. Gas jar. |
KLB chemistry students Book 2 pages 45-47 -Longman KCSE revision chemistry page 91 spotlight pg 121-122 |
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| 2 | Chemical Families: Patterns in properties | Reaction of halogens with metals | By the end of the lesson, the learner should be able to: ⦠Describe the reaction between halogens and metals |
⦠Experiment to investigate reaction between halogens and metals ⦠Discussion and note taking |
⦠Deflagrating spoon. ⦠Zinc metal. ⦠Iron wool. ⦠Source of heat. ⦠Bromine liquid. Iodine crystals. Source of heat. Gas jar. |
-Longman KCSE revision chemistry page 91-93 | ||
| 3&4 | Chemical Families: Patterns in properties | Similarity of ions and formulae of compounds and uses of halogens |
By the end of the lesson, the learner should be able to: ⦠Explain the similarities of ions and formulae of the halogen compounds ⦠Explain the uses of halogens |
⦠Class discussion and note taking. | ⦠Chart showing ions and formulae of halogen compounds | Spotlight chemistry page 122 -Longman KCSE revision chemistry page 91 |
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| 11 | 1 | Chemical Families: Patterns in properties | Noble gases | By the end of the lesson, the learner should be able to:
⦠Name the noble gases |
⦠Locating and identifying noble gases in the periodic table
⦠Writing the electronic configuration of noble gases |
⦠Chart on properties of noble gases | KLB chemistry students Book 2 pages 50 -Longman KCSE revision chemistry page 92 |
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| 2 | Chemical Families: Patterns in properties | Uses of noble gases | By the end of the lesson, the learner should be able to: ⦠Explain the uses of noble gases |
⦠Class discussion and note taking | ⦠Chalkboard | KLB chemistry students Book 2 pages 51 Spotlight page 124 -Longman KCSE revision chemistry page 92 |
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| 3&4 | Chemical Families: Patterns in properties | Properties and trends across a period | By the end of the lesson, the learner should be able to: ⦠Identify the period three elements. ⦠Explain the trends in physical properties of elements across the period |
⦠Identifying the period three elements ⦠Writing the electronic arrangement ⦠Explaining the trends in physical properties |
⦠Periodic table. ⦠Chart showing the physical properties of the period three elements. |
KLB chemistry students Book 2 pages 52-54 -Longman KCSE revision chemistry page 103 Spotlight chemistry pg 124-125 |
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| 12 | 1 | Chemical Families: Patterns in properties | Chemical properties | By the end of the lesson, the learner should be able to: ⦠State and explain the trends in chemical behavior of elements in period 3 |
⦠Discussing and writing chemical equations on reaction of period three elements with air. ⦠Explaining the nature of oxides formed |
⦠Chalkboard illustrations ⦠(experiments on this subtopic had earlier been done) |
KLB chemistry students Book 2 pages 55-57 -Longman KCSE revision chemistry page 102 |
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| 2 | Chemical Families | By the end of the lesson, the learner should be able to: ⦠Describe the reaction of the period three elements with acids and water |
⦠Class discussion on reaction between hydrochloric acid and the period three elements ⦠Writing equations on the reaction of period three elements with water |
⦠Water ⦠Trough ⦠Dilute acids ⦠Sodium ⦠Magnesium |
KLB chemistry students Book 2 pages 57-59 -Longman KCSE revision chemistry page 104 Spotlight chemistry pg 127-128 |
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| 3&4 | Chemical families | Revision | By the end of the lesson, the learner should be able to: ⦠Recall all aspects of what was taught on chemical families |
⦠Class discussion ⦠Question answering ⦠Writing and balancing equations |
⦠Quiz ⦠Revision questions on the topic chemical families |
KLB chemistry students Book 2 pages 60-61 Longman KCSE revision chemistry page 104 |
