SULPHUR AND ITS COMPOUNDS

By the end of the lesson, the learner should be able to:

• To describe extraction of sulphur by Frasch process

• Illustrate and discuss extraction of sulphur.

• Chart-the Frasch process.

KLB BOOK 3
page 180-181

Longhorn Book 3  page 126-129

By the end of the lesson, the learner should be able to:

• To identify allotropes of sulphur.

• To describe preparation of allotropes of sulphur.

• Discussion and exposition of new concepts. 

KLB BOOK 3
page 182-183

Longhorn Book 3  page 126-129

Physical properties of sulphur.

Heating of sulphur.

By the end of the lesson, the learner should be able to:

• To list physical properties of sulphur.
  
  
• To describe effects of heat on sulphur.

• Class experiment:
  
  
• Solubility of sulphur in water, benzene, e.t.c. 
  
  
• Class experiments:
  
  
• Heating sulphur gently then strongly.
  
  
• Discuss the observations.

KLB BOOK 3
page 184

Longhorn Book 3  page 253-255

By the end of the lesson, the learner should be able to:

• To investigate and describe chemical properties of sulphur.

• Group experiments.
  
  
• Discuss observations.
  
  
• Write corresponding equations.

KLB BOOK 3page 188-190

Longhorn Book 3  page 256-258

Uses of sulphur.

 Sulphur dioxide.

By the end of the lesson, the learner should be able to:

• Describe lab. preparation of sulphur dioxide.

• Teacher elucidates uses of sulphur.
  
  
• Teacher demonstration:-Preparation of sulphur dioxide in a fume chamber/in the open.
  
  
• Carrying out tests on the gas.

KLB BOOK 3
page 191-192

Longhorn Book 3  page 258

Physical properties of sulphur dioxide.

By the end of the lesson, the learner should be able to:

• To list down physical properties of sulphur dioxide.

• Discuss the above tests.

KLB BOOK 3
page 193

Longhorn Book 3  page 262-263

Acidic properties of SO₂

By the end of the lesson, the learner should be able to:

• To carry out experiments to determine bleaching properties of SO₂.

• Teacher demonstration to verify acidic properties of sulphur dioxide.
  
  
• Write equations.

KLB BOOK 3
page 193

Longhorn Book 3  page 262-263

By the end of the lesson, the learner should be able to:

• To verify reducing action of SO₂

• Class experiments: make observations and draw conclusions.
  
  
• Write balanced corresponding equations.

• Experimental worksheets.

KLB BOOK 3
page 195

By the end of the lesson, the learner should be able to:

• To carry out experiments to determine bleaching properties of SO₂.

• Discuss the observations made above.
  
  
• Write corresponding equations.

KLB BOOK 3
page 194

Longhorn Book 3  page 263-264

By the end of the lesson, the learner should be able to:

• To explain Oxidizing action of SO₂.

• Q/A: review redox reactions.
  
  
• Teacher demonstration: - Lowering magnesium into a jar of SO₂; effect of SO₂ on hydrogen sulphide.
  
  
• Discuss observations.
  
  
• Write equations for the reactions.

• Burning magnesium.
  
  
• Hydrogen sulphide.

KLB BOOK 3
page 198-199

Longhorn Book 3  page 266-267

Sulphate and sulphite ions.

Uses of SO₂.

By the end of the lesson, the learner should be able to:

• To carry out tests for Sulphate and sulphite ions.
  
  
• State uses of SO₂.

• Class experiments.
  
  
• Make deductions from the observations made.
  
  
• Write (ionic) equations for the reactions.
  
  
• Teacher elucidates uses of SO₂.

• Sodium sulphate
  
  
• Barium chloride
  
  
• Barium nitrate

KLB BOOK 3
page 200

Longhorn Book 3  page 268-269

Sulphuric acid.

Contact process of manufacture.

By the end of the lesson, the learner should be able to:

• To identify raw materials for manufacture of sulphuric acid.
  
  
• To describe the contact process.

• Discussion using schematic
  
  
• Flow charts.
  
  
• Writing equations.

• Chart-schematic
  
  
• Flow charts.

KLB BOOK 3
page 201-203

Longhorn Book 3  page 275-276

By the end of the lesson, the learner should be able to:

• Investigate properties of concentrated H₂SO₄.

• Class / group experiments on worksheets.
  
  
• Enter results in a table.

KLB BOOK 3
page 203-204

Longhorn Book 3  page 274-275

By the end of the lesson, the learner should be able to:

• Describe properties of conc. H₂SO₄.

• Discuss above observations.
  
  
• Write relevant equations.

KLB BOOK 3
page 204

By the end of the lesson, the learner should be able to:

• To dilute concentrated sulphuric acid.
  
  
• State physical properties of sulphuric acid.

• Teacher demonstration – diluting concentrated sulphuric acid.
  
  
• Discuss use of concentrated sulphuric acid as a drying and dehydrating agent.

• Concentrated sulphuric acid.

KLB BOOK 3
page 205

Longhorn Book 3  page 274-275

Chemical properties of Sulphuric acid.

By the end of the lesson, the learner should be able to:

• To write equations to show that concentrated sulphuric acid is a drying and dehydrating agent.
  
  
• To describe reactions of dilute H₂SO₄ with metals.

• Discussion and explanations.
• Group experiments – reaction of metals with  dilute H₂SO₄,
  
  
• Make observations and relevant deductions; writing corresponding equations.

• Magnesium
  
  
• zinc
  
  
• copper 

KLB BOOK 3
page 206

Longhorn Book 3  page 276-278

By the end of the lesson, the learner should be able to:

• To investigate reaction of dilute H₂SO₄ with  carbonates and hydrogen carbonates.

• Class experiments.
  
  
• Making  tabulated observations.

KLB BOOK 3
page 208

Longhorn Book 3  page 279-280

By the end of the lesson, the learner should be able to:

• To describe reaction of dilute H₂SO₄ with  carbonates and hydrogen carbonates. 

•  Discussion,
  
  
• writing relevant equations.

KLB BOOK 3
page 208

By the end of the lesson, the learner should be able to:

• To investigate reaction of dilute H₂SO₄ with metal oxides and hydroxides. 

• Class experiments.
  
  
• Observing colour changes.

• Oxides of magnesium, zinc, copper.
  
  
• NaOH Solution.

KLB BOOK 3
page 210

Longhorn Book 3  page 287-288

By the end of the lesson, the learner should be able to:

• To explain reactions of dilute H₂SO₄ with metal oxides and hydroxides. 

• Discussion, writing relevant chemical equations.

KLB BOOK 3
page 211

Hydrogen sulphide.

 Preparation of the gas.

By the end of the lesson, the learner should be able to:

• To describe preparation of hydrogen sulphide.
  
  
• To state properties of the gas.

• Theoretical / descriptive approach.
  
  
• Writing corresponding equations.
  
  
• Discuss physical properties of the gas and reaction of the gas with oxygen.

KLB BOOK 3
page 210

Longhorn Book 3  page 289-290

Reaction of the gas with water.

 Reducing properties of the gas.

By the end of the lesson, the learner should be able to:

• To write equations for reaction of the gas with water.
  
  
•  To demonstrate reducing properties of the gas.

• Writing chemical equations for the reactions.

KLB BOOK 3
page 212

Longhorn Book 3  page 291-292

By the end of the lesson, the learner should be able to:

• To explain environmental pollution caused by sulphur and its compounds.

• Discussion and explanation.

KLB BOOK 3
page 214

Longhorn Book 3  page 293-295

CHLORINE  & ITS COMPOUNDS

 Lab preparation of chlorine gas.

By the end of the lesson, the learner should be able to:

• Describe laboratory preparation of chlorine gas.

• Teacher demonstration  – gas preparation tests on the gas.

• Concentrated hydrochloric acid
  
  
• Manganese (IV) oxide.

KLB BOOK 3
page 219

Longhorn Book 3  page 298-299

By the end of the lesson, the learner should be able to:

• State physical properties of chlorine.

• Q/A: Relate the properties to the method of collection of the gas.
  
  
• Write equations for the reaction leading to formation of chlorine.

KLB BOOK 3
page 220

Longhorn Book 3  page 301

By the end of the lesson, the learner should be able to:

• To investigate and explain reaction of chlorine with water.

• Teacher demonstration:
  
  
• Writing chemical equations.

• Moist blue litmus papers.

KLB BOOK 3
page 222

Longhorn Book 3  page 301-302

Chemical properties of chlorine

Reaction with metals

By the end of the lesson, the learner should be able to:

• To investigate and explain reaction of chlorine with metals / non-metals.

• Teacher demonstration:
  
  
• Discussion. 
  
  
• Writing chemical equations.

KLB BOOK 3
page 224-225

Longhorn Book 3  page 303-305

Chemical properties of chlorine

Reaction with metals

By the end of the lesson, the learner should be able to:

• To investigate and explain reaction of chlorine with metals / non-metals.

• Teacher demonstration:
  
  
• Discussion. 
  
  
• Writing chemical equations.

KLB BOOK 3
page 224-225

Longhorn Book 3  page 303-305

By the end of the lesson, the learner should be able to:

• To investigate and explain reaction of chlorine with reducing a gents.

• Group experiments.
  
  
• Discuss and explain observations made.
  
  
• Write corresponding chemical equations.

• Experiment Worksheets.

KLB BOOK 3
page 226-227

Longhorn Book 3  page 307-308

By the end of the lesson, the learner should be able to:

• To investigate and explain reaction of chlorine with alkalis.

• Teacher demonstration: Bubbling chlorine with dilute cold / hot NaOH solution.
  
  
• Make observations and account for them.

• Cold and hot NaOH solutions.

KLB BOOK 3
page 228

Longhorn Book 3  page 313-314

By the end of the lesson, the learner should be able to:

• To carry out tests for chlorides.

• Class experiments.
  
  
• Discuss observations, results.
  
  
• Write chemical equations for the reactions.

• Experiment Worksheets.
  
  
• Zinc chloride, litmus paper,
  
  
• Concentrated Sulphuric acid. 

KLB BOOK 3
page 230

Longhorn Book 3  page 318-319

By the end of the lesson, the learner should be able to:

• To carry out tests for chlorides.

• Class experiments.
  
  
• Discuss observations, results.
  
  
• Write chemical equations for the reactions.

• Experiment Worksheets.
  
  
• Zinc chloride,
  
  
• litmus paper,
  
  
• concentrated Sulphuric acid. 

KLB BOOK 3
page 230

Longhorn Book 3  page 318-319

By the end of the lesson, the learner should be able to:

• To state uses of chlorine.

• Teacher elucidates uses of chlorine.

KLB BOOK 3
page 231

Longhorn Book 3  page 320

Hydrogen chloride gas: Lab preparation and Physical properties.

By the end of the lesson, the learner should be able to:

• To describe Lab. prep of hydrogen chloride gas.
  
  
• To investigate and state physical properties of hydrogen chloride gas.

• Teacher demonstration.
  
  
• Carry out tests on the gas and deduce the properties of the gas.

•  Sodium chloride crystals,
  
  
• Concentrated H₂SO₄

KLB BOOK 3
page 232

Longhorn Book 3  page 323-324

• Aqueous hydrogen chloride.

By the end of the lesson, the learner should be able to:

• To prepare aqueous hydrogen chloride.

• Class experiment leading to deduction of chemical properties of hydrogen chloride gas.

• Distilled water

KLB BOOK 3
page 234

• Further chemical properties of hydrogen chloride gas.

By the end of the lesson, the learner should be able to:

• To determine chemical properties of hydrogen chloride gas.
  
  
• To carry out confirmatory test for hydrogen chloride gas

• Class experiment leading to deduction of  further chemical properties of hydrogen chloride gas / confirmatory test for hydrogen chloride gas.

• Ammonia solution.

KLB BOOK 3
page 235

Longhorn Book 3  page 327-331

By the end of the lesson, the learner should be able to:

• Identify raw materials for manufacture of hydrochloric acid in large scale.
  
  
• Describe the manufacturing process.
  
  

• Discussion giving relevant equations

KLB BOOK 3
page 237

Longhorn Book 3  page 330

By the end of the lesson, the learner should be able to:

• To state uses of hydrochloric acid.

• Brief discussion.

KLB BOOK 3
page 237

Longhorn Book 3  page 331

By the end of the lesson, the learner should be able to:

• To explain effects of hydrochloric acid on the environment.

• Discussion and explanation. 
  
  
• Assignment.

KLB BOOK 3
page 238

Longhorn Book 3  page 334-338