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Thursday, 20 May 2021 07:59

KLB Form 2 Chemistry Schemes of Work Term 3 2020/2021

SCHEMES OF WORK FORM TWO CHEMISTRY TERM THREE 2020/2021
WK NO.	L/NO.	TOPIC/ SUBTOPIC	LESSON/ SPECIFIC OBJECTIVES	TEACHING/ LEARNING ACTIVITIES	MATERIALS/ RESOURCES	REFERENCES	REMARKS
1	1	Effects of heat on carbonates	To state effects of heat on carbonates. To predict products resulting from heating metal carbonates	Group experiments- To investigate effects of heat on Na₂CO₃, K₂CO₃, CaCO₃, ZnCO₃, PbCO₃, e. t. c. Observe various color changes before, during and after heating. Write equations for the reactions.	Various carbonates.	KLB BOOK II PP 108-109
	2	Effects of heat on nitrates	To state effects of heat on nitrates. To predict products resulting from heating metal nitrates	Group experiments- To investigate effects of heat on various metal nitrates. Observe various color changes before, during and after heating. Write equations for the reactions	Common metal nitrates.	PP 110-111
	3,4	Effects of heat on sulphates.	To state effects of heat on Sulphates. To predict products results from heating metal sulphates.	Group experiments- To investigate effects of heat on various Sulphates. Observe various color changes before, during and after heating. Write equations for the reactions	Common Sulphates	PP 113
2	1	Hygroscopy, Deliquescence and Efflorescence	To define hygroscopic deliquescent and efflorescent salts. To give examples of hygroscopic deliquescent and efflorescent salts.	Prepare a sample of various salts. Expose them to the atmosphere overnight. Students classify the salts as hygroscopic, deliquescent and / or efflorescent.		PP 114
	2	Uses of salts.	To state uses of salts	Teacher elucidates uses of salts		PP 114
	3,4	EFFECTS OF AN ELECTRIC CURRENT ON SUBSTANCES. Electrical conductivity	To test for electrical conductivities of substances.	Group experiments- to identify conductors and non-conductors. Explain the difference in (non) conductivities.	Various solids, bulb, battery, & wires	PP 118-119
3	1,2	Molten electrolytes.	To test for electrical conductivities molten electrolytes.	Group experiments- to identify electrolytes in molten form. Explain the difference in molten electrolytes.	Molten candle wax Sugar Sulphur Lead oxide.	PP 120-121
3	3,4	Electrolysis.	To define electrolysis To describe the process of electrolysis in terms of charge movement.	Descriptive approach punctuated with Q/A.
4	1,2	Aqueous electrolytes. Electrodes.	To define an electrolyte To test for electrical conductivities of electrodes.	To investigate chemical effect of an electric current. Classify the solutions as electrolyte or non -electrolytes. Discuss the electrical properties of the solutions.	Graphite electrodes Battery Various aqueous solutions switch bulb.	PP 122-123
4	3,4	Reaction on electrodes.	To describe half- equation reactions at the cathode and anode	To demonstrate –Electrolysis of molten lead (II) bromide Observe color changes Explanation of half-equations and reactions at the electrodes.	Graphite electrodes Battery Various aqueous solutions switch.	PP 126-127
5	1,2	Binary electrolyte.	To define a binary electrolyte. To state the products of a binary electrolyte.	Completing a table of electrolysis of binary electrolytes.		PP 127
	3	Application of electrolysis.	To state the application of electrolysis	Discussion and explanations		PP 128
	4	Electroplating	To describe electroplating process	Experiment- Left overnight. Electroplating an iron nail with silver nitrate/ copper sulphate. Brief discussion.	Silver nitrate Iron nail Complete circuit battery.	PP 129-130
6	1	Topic assessment
	2	CARBON AND SOME OF ITS COMPOUNDS. Allotropy.	Define allotropes and allotropy. Identify allotropes of carbon. Represent diamond and graphite diagrammatically.	Teacher exposes new terms. Review covalent bond. Discuss boding in diamond and graphite.		PP 131-133
	3,4	Physical and chemical properties of diamond, graphite and amorphous carbon	Describe physical and chemical properties of diamond, graphite and amorphous carbon. State uses of carbon allotropes.	Discuss physical and chemical properties of diamond, graphite and amorphous carbon. Explain the Physical and chemical properties of diamond, graphite and amorphous carbon. Discuss uses of carbon allotropes.	Charcoal, graphite	PP 134-135
7	1	Burning carbon and oxygen	Describe reaction of carbon with oxygen.	Teacher demonstration- Prepare oxygen and pass dry oxygen into a tube containing carbon. Heat the carbon. Observe effects on limewater.	Carbon, limewater, tube, limewater stand& Bunsen burner.	PP 134- 135
	2	Reduction properties of carbon.	Describe reduction properties of carbon. Show reduction properties of carbon.	Teacher demonstration – Burn strongly a mixture of carbon and CuO on a bottle top. Observe color changes and give underlying explanation	CuO, pounded charcoal, Bunsen burner& bottle top	PP 126
	3&4	Reaction of carbon with acids. Preparation of CO₂.	Describe reaction of carbon with acids. Prepare CO₂ in the lab.	Teacher demonstration- reaction of carbon with hot conc. HNO₃. Write balanced equations for the reaction. Review effects of heat on carbonates. Group experiments/teacher demonstration- preparation of CO_2.	Conc. HNO₃, Limewater.	PP 126
8	1,2	Properties of CO₂.	Describe properties of CO₂.	Simple experiments to determine properties of CO_2. Discuss the observations.	Lime water, Magnesium ribbon, Universal indicator, lit candle.	PP 138-139
8	3,4	Chemical equations for reactions involving CO₂.	Write a balanced CO_2.	Give examples of reactions. Write corresponding balanced chemical equations.		PP 139-140
9	1	Uses of CO_2.	State uses of CO₂	Discuss briefly the uses of co₂		PP 140-141
	2	Carbon monoxide lab preparation.	To describe preparation of carbon monoxide in the lab	Teacher demonstration: preparation of carbon monoxide in the lab. Make observations.		PP 142-143
	3	Chemical properties of carbon monoxide.	To describe chemical properties of carbon monoxide.	Description of properties of carbon monoxide. Discussion and writing of chemical equations.		PP 144-145
	4	Carbonates and hydrogen carbonates.	To state the difference between carbonates and hydrogen carbonates. To describe chemical reactions of carbonates and hydrogen carbonates with acids.	Observe reactions of carbonates of Ca, Cu, Zn, NaHCO₃ with HCl, HNO₃, and H₂SO₄. Record observations in a table.	Carbonates of Ca, Cu, Zn, NaHCO₃ with HCl, HNO₃, and H₂SO₄.	PP 148-149
10	1	Carbonates and hydrogen carbonates.	To write chemical equations for reactions of carbonates and hydrogen carbonates with acids.	Discuss the observations above. Write chemical equations for the reactions.
	2	Heating carbonates and hydrogen carbonates.	To investigate reactions of carbonates and hydrogen carbonates on heating.	To investigate reactions of carbonates and hydrogen carbonates on heating.	Various carbonates and hydrogen carbonates.
	3,4	Heating carbonates and hydrogen carbonates.	To write equations for reaction of carbonates and hydrogen carbonates on heating.	Discuss the above observations. Write corresponding balanced equations.		PP 150-151
11	1	Extraction of sodium carbonate from trona.	To draw schematic diagram for extraction of sodium carbonates.	Discuss each step of the process. Write relevant equations.		PP 153-157
	2	Solvay process of preparing sodium carbonate.	To draw schematic diagram for extraction of sodium carbonates.	Discuss each step of the process. Write relevant equations.
	3,4	Importance of carbon in nature. & its effects on the environment.	To discuss: - Importance of carbon in nature. & Effects of carbon on the environment.	Discuss the carbon cycle and processes that increase/ reduce amount of CO₂ in the air. Uses of CO₂ in soft drinks and fire extinguishers.		PP 157-158
12 13		END OF YEAR EXAMS

Published in Schemes of Work Form 2 2020/2021

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