RATES OF REACTION & REVERSIBLE REACTIONS.

Effect of temperature of reactants on rate of reaction.
Effect of change in surface area of reactants on the rate of a reaction.
Effect of a suitable catalyst on the rate of a reaction
Effect of light on rate of specific reactions.
Reversible reactions.

By the end of the lesson, the learner should be able to:
Explain the effect of temperature on rate of reaction.

Group experiments: investigate the effects of temperature on the rate of reaction of sodium thiosulphate with dilute HCl.
Sketch and interpret relevant graphs.
Discuss the collision theory and effects of activation energy.

Sodium thiosulphate heated at different temperatures, dilute HCl, stopwatches.
Graph papers.
Marble chips, marble chips powder, syringes, conical flasks with stoppers, 1M HCl.
Hydrogen peroxide, manganese (IV) oxide.
Silver bromide.
Crystals of hydrated copper (II) sulphate.

K.L.B. BK IV
Pages 80-83

RATES OF REACTION & REVERSIBLE REACTIONS.
ELECTRO-CHEMISTRY.
ELECTRO-CHEMISTRY.
ELECTRO-CHEMISTRY.
ELECTRO-CHEMISTRY.
ELECTRO-CHEMISTRY.

State of equilibrium in chemical reactions.
Le Chatelier?s Principle.
Effect of change of pressure and temperature on equilibrium shift.
The Haber Process.
The Contact Process.
Redox reactions.
Oxidizing Numbers.
Displacement reactions.
The oxidizing power of an element.
Cell diagrams.
Standard Electrode Potentials.
Standard electrode potential series.
Emf of a cell.
Possibility of a reaction to take place.
Primary and secondary chemical cells.
Electrolysis of dilute NaCl.
Electrolysis of brine.
Electrolysis of dilute sulphuric (VI) acid.
Factors affecting electrolysis.

By the end of the lesson, the learner should be able to:
Define the term equilibrium as used in reversible reactions.
Write down equations of reversible reactions in a state of equilibrium.

Identify standard conditions for measuring electrode potentials.
Define the term standard electrode potential of a cell.
Write half reactions of electrochemical cells.

Brief discussion, giving examples of chemical equations for reversible reactions.
Descriptive and expository approaches: teacher exposes new concepts.

student book
Add 2M sodium hydroxide,
Metals: Ca, Na, Zn, Fe, Pb, and Cu.
Solutions containing Ca2+, Mg2+, Zn2+, Fe2+.
Halogens:
Cl2 (g),
Br2 (l),
I2 (s).
Halides:
KCl, KBr, KI.
Zinc/ copper cell.
student book
Dilute sodium chloride voltameter.
Brine voltameter.
Sulphuric acid voltameter.

K.L.B. BK IV
Pages 94-95
K.L.B. BK IV
Pages 129-131

ELECTRO-CHEMISTRY.
METALS
METALS
METALS
METALS
METALS
METALS
METALS
METALS

Application of electrolysis.
Faraday?s law of electrolysis.
Ores of some metals.
Occurrence and extraction of sodium.
Occurrence and extraction of aluminium.
Occurrence and extraction of iron.
Occurrence and extraction of zinc.
Extraction of lead.
Occurrence and extraction of copper.
Physical properties of some metals.

By the end of the lesson, the learner should be able to:
Describe some applications of electrolysis.

Probing questions and brief discussion on applications of electrolysis.
Practical assignment on electrolysis: electroplating an iron nail with a suitable metal.

Suitable voltameter.
Weighing balance, stop watch, copper sulphate voltameter.
Chart: Down?s cell.
student book
Chart: Blast furnace.
Flow chart: extraction of Zinc.
Flow chart: extraction of lead.
Flow chart: extraction of copper.

K.L.B. BK IV
Pages 155-7

METALS
ORGANIC CHEMISTRY II (ALKANES & ALKANOIC ACIDS)
ORGANIC CHEMISTRY II (ALKANES & ALKANOIC ACIDS)
ORGANIC CHEMISTRY II (ALKANES & ALKANOIC ACIDS)
ORGANIC CHEMISTRY II (ALKANES & ALKANOIC ACIDS)
RADIOACTIVITY
RADIOACTIVITY
RADIOACTIVITY
RADIOACTIVITY
RADIOACTIVITY
RADIOACTIVITY
RADIOACTIVITY

Reaction of metals with oxygen.
Reaction of metals with cold water and steam.
Reaction of metals with chlorine.
Reaction of metals with acids.
Uses of metals.
Environmental effects of extraction of metals.
Alkanols (Alcohols).
Nomenclature of alkanols.
Isomerism in alkanols.
Preparation of ethanol in the lab.
Definition of radioactivity.
Alpha particles.
Equations involving alpha particles.
Beta particles. Gamma rays.
Radioactive Half-Life.
Radioactive decay curve.
Nuclear fusion and nuclear fission. Applications of radioactivity.

By the end of the lesson, the learner should be able to:
Explain effect of burning metals in air.

Teacher demonstration / Group experiments.
Burning some metals in air.
Write relevant equations.
Brief discussion.

Common lab. metals.
Metals: Al, Zn, Fe, Cu.
Metals: Al, Zn, Fe, Cu.
Metals: Al, Zn, Fe, Cu.
Acids; HCl, HNO3, H2SO4.
student book
Calcium hydroxide solution, sugar solution, yeast.
Dice.
Graph papers.

K.L.B. BK IV
Pages 184-6