Summary

• Description:

  The MS Word document comprises Grade 10 CBC Chemistry Term 3 2026 Scheme of Work structured for senior school science educators delivering the Chemistry curriculum under the Kenya Institute of Curriculum Development (KICD) 2025 Competency-Based Curriculum framework. This pedagogical document provides an organized, inquiry-driven framework for lesson planning, laboratory experiment organization, chemical safety management, and syllabus execution throughout the third term of the academic year.

  The entire term's learning falls under Strand 2.0 (Physical Chemistry), divided into two core sub-strands: Sub-Strand 2.1 (Acids and Bases) and Sub-Strand 2.2 (Introduction to Salts). Learners investigate the chemical properties and aqueous behavior of acids and bases, exploring hydrogen (H+) and hydroxide (OH-) ion dissociation, acid-base indicators, pH scale measurement, reactions with metals, carbonates, and bases (neutralization), strong vs. weak acid/base ionization, electrical conductivity, day-to-day applications (antacids, soil liming), and laboratory waste disposal protocols. In the second half, the scheme covers salt definition and classification (normal, acid, basic, double), solubility rules in water, methods of preparing soluble salts (acid + metal, acid + insoluble base, titration, acid + carbonate) and insoluble salts (precipitation/double decomposition), ionic equations, direct synthesis of binary salts, air exposure behaviors (hygroscopic, deliquescent, efflorescent), industrial/agricultural salt applications, environmental issues (eutrophication, soil acidity), and percentage yield calculations.

  Key Scheme Details

  • Education Level: Grade 10 (Senior School)

  • Subject: Chemistry

  • Term: Term 3

  • Year: 2026

  • Curriculum: KICD Competency-Based Curriculum (CBC) 2025 Framework

  • Number of Weeks Covered: 9 Calendar Weeks

  • Number of Teaching Weeks: 8 Weeks

  • Number of Lessons per Week: 5 Lessons

  • Total Number of Lessons: 40 Lessons

  • Half-Term/Mid-Term Break: Week 7 (7 October 2026 - 11 October 2026)

  • Examination/Assessment Period: Week 9 (Theory and Practical Exams)

  • Strand Covered: Physical Chemistry

  • Sub-Strands Covered: Acids and Bases, Introduction to Salts, Sub-Strand Revision and End-of-Term Assessments

  • Assessment Methods: Practical observation, oral questions, written exercises, practical reports, data table evaluation, titration technique checks, ionic equation problem sets, poster evaluation, qualitative analysis worksheets, practical exam, written theory exam

  • Learning Resources: Grade 10 Chemistry Curriculum Design, Grade 10 Learner's Books, test tubes, beakers, burettes, pipettes, Universal Indicator, pH meters, conductivity apparatus, reagents (HCl, H2SO4, NaOH, NH3, CuO, CaCO3, BaCl2, Na2SO4, Pb(NO3)2), evaporating dishes, Bunsen burners, balances, past exam papers, marking schemes

  Weekly Coverage

  Week 1: Characteristics and Chemical Reactions of Acids and Bases
  Dissociation of acids and bases in water (H+ and OH- ions), testing household liquids with indicators, acid reactions with reactive metals (H2 gas pop test), reactions with metal carbonates (CO2 lime water test), and acid-base neutralization reactions.

  Week 2: pH Scale, Strength and Conductivity
  Measuring pH with Universal Indicator and pH meters, strong vs. weak acids (ionization of HCl vs. CH3COOH), strong vs. weak bases (NaOH vs. NH3), electrical conductivity of acid/base solutions, and day-to-day applications (antacids, soil liming).

  Week 3: Waste Safety, Revision and Salt Classification
  Acid/base laboratory waste disposal protocols, sub-strand review, defining salts, classifying salts (normal, acid, basic, double), and general solubility rules for salts in water.

  Week 4: Practical Solubility and Soluble Salt Preparation
  Experimental testing of salt solubility, preparing soluble salts via acid + metal reactions (Zn + H2SO4), acid + insoluble base (CuO + H2SO4), acid + alkali titration (HCl + NaOH), and acid + carbonate reactions (CaCO3 + HCl).

  Week 5: Insoluble Salts, Ionic Equations and Air Exposure
  Preparing insoluble salts by precipitation (BaCl2 + Na2SO4), full and net ionic equations, direct synthesis of binary salts (FeCl3), hygroscopic salts (CuSO4, CaO), and deliquescent salts (CaCl2, NaOH).

  Week 6: Efflorescence, Salt Applications and Environmental Impact
  Efflorescent salts (Na2CO3.10H2O), industrial and agricultural uses of salts, environmental impacts (eutrophication, soil acidification), sustainable mitigation measures, and heavy metal waste disposal safety.

  Week 7: Mid-Term Break
  Scheduled mid-term break from 7 October 2026 to 11 October 2026.

  Week 8: Review, Qualitative Analysis and Yield Calculations
  Post-midterm script review, qualitative practical analysis tests on unknown salts, calculating percentage yield (Actual Yield/Theoretical Yield x 100), industrial manufacturing processes (fertilizers, detergents), and constructing physical chemistry mind maps.

  Week 9: End-of-Term Examinations and Feedback
  Timed revision drills, sitting for the End-of-Term Practical Examination, sitting for the End-of-Term Written Theory Examination, review of marking schemes, and self-reflection target setting.

  Strands and Sub-Strands Covered

  Strand 2.0: Physical Chemistry

  Sub-Strand 2.1: Acids and Bases

  • Aqueous dissociation: hydrogen ion (H+) and hydroxide ion (OH-) formation.

  • Physical properties and testing household solutions using litmus, phenolphthalein, and methyl orange.

  • Chemical reactions: dilute acids with metals (H2 gas), carbonates (CO2 gas), and oxides/hydroxides.

  • The pH scale (0-14), Universal Indicator, and digital pH meter measurements.

  • Degree of ionization: strong vs. weak acids (HCl vs. CH3COOH) and bases (NaOH vs. NH3).

  • Electrolyte conductivity, mobile ion concentration, antacid applications, and soil liming.

  • Laboratory chemical hazard warning symbols, waste neutralization, and safe disposal.

  Sub-Strand 2.2: Introduction to Salts

  • Definition and classification: normal, acid, basic, and double salts.

  • Solubility guidelines for nitrates, chlorides, sulphates, and carbonates.

  • Preparation pathways for soluble salts: displacement, neutralization, titration, and carbonate reaction.

  • Preparation pathways for insoluble salts: precipitation (double decomposition) and net ionic equations.

  • Direct combination synthesis of anhydrous binary salts (FeCl3).

  • Atmospheric moisture interactions: hygroscopy, deliquescence, and efflorescence.

  • Economic applications in agriculture, food, medicine, and glass manufacturing.

  • Environmental impacts: nitrate/phosphate runoff, eutrophication, soil degradation, and mitigation.

  • Percentage yield calculations (Percentage Yield = Actual Yield/Theoretical Yield x 100).

  Key Topics and Learning Areas

  Acid-Base Chemistry, pH Dynamics, and Industrial Uses

  • Ionization equilibria in aqueous media and proton donor/acceptor behavior.

  • Gas testing procedures: lighted splint pop test for H2 and lime water cloudiness test for CO2.

  • Volumetric titration procedures: phenolphthalein endpoint determinations without indicator residual contamination.

  • Neutralization chemistry in antacid formulations, agriculture liming (CaO/Ca(OH)2), and wastewater treatment.

  Salt Preparations, Ionic Equations, and Crystallization

  • Evaporation to crystallization point, filtration of excess reactants, and crystal drying techniques.

  • Precipitation reactions, cancelling spectator ions, and balanced net ionic equation writing.

  • Air exposure behaviors: water of crystallization loss (efflorescence) vs. atmospheric moisture absorption (hygroscopy/deliquescence).

  Environmental Chemistry and Quantitative Yield Analysis

  • Algal blooms, dissolved oxygen depletion, aquatic hypoxia, and eutrophication mechanisms.

  • Sustainable soil management: organic manures, crop rotation, and precision fertilizer applications.

  • Stoichiometric mole calculations, theoretical yield deductions, and percentage yield assessments.

  Learning Outcomes and Competencies

  This scheme cultivates scientific inquiry, laboratory dexterity, quantitative reasoning, and environmental responsibility. Learners develop critical thinking through ionization analysis, mathematical competence through percentage yield calculations, and manual dexterity through burette titration and filtration setup. The curriculum builds problem-solving skills by matching salt formulas to synthesis pathways and analyzing environmental case studies. Furthermore, learners cultivate environmental stewardship, chemical safety discipline, team collaboration, and communication skills required for tertiary studies in chemistry, chemical engineering, medicine, and environmental science.

  Learning Experiences and Practical Activities

  Learners engage in hands-on practical experiments, such as testing lemon juice, vinegar, wood ash, and soap solutions with litmus and Universal Indicator paper. They react dilute acids with zinc granules to test hydrogen gas, react marble chips with acid to bubble carbon dioxide through lime water, and perform temperature change measurements during neutralization. Practical salt preparations include reacting zinc/magnesium with sulphuric acid, reacting copper(II) oxide with warm acid to form blue hydrated copper sulphate crystals, titrating hydrochloric acid against sodium hydroxide, and mixing barium chloride with sodium sulphate to precipitate barium sulphate. Learners expose washing soda, quicklime, and calcium chloride to air on watch glasses to track mass/phase changes, construct mind maps, and solve ionic equation problem sets.

  Assessment Methods

  Formative and Laboratory Assessment: Continuous practical observation, circuit setup checks, titration technique monitoring, laboratory cleanup checks, and oral questioning.

  Written and Quantitative Assessment: Practical laboratory reports, data table completion checks, balanced equation and ionic equation problem sets, percentage yield calculation exercises, and case study analysis reports.

  Summative Assessment: Flowchart synthesis checks, written sub-strand tests, a formal End-of-Term Practical Examination (titrations and qualitative analysis), a formal End-of-Term Written Theory Examination, and self-reflection journals.

  Learning Resources

  Laboratory Apparatus: Test tubes, test tube racks, beakers, conical flasks, burettes, pipettes, delivery tubes, filter funnels, filter paper, evaporating dishes, watch glasses, Bunsen burners, tripod stands, wire gauzes, desiccators, graphite electrodes, 6V batteries, bulbs, ammeters, and weighing balances.

  Chemical Reagents and Indicator Chemicals: Hydrochloric acid, sulphuric acid, ethanoic acid, sodium hydroxide, ammonia solution, zinc granules, magnesium ribbon, copper(II) oxide powder, calcium carbonate (marble chips), lime water, Universal Indicator, litmus paper, phenolphthalein, barium chloride solution, sodium sulphate solution, lead(II) nitrate solution, potassium iodide, hydrated sodium carbonate crystals, anhydrous copper(II) sulphate, calcium oxide, and calcium chloride.

  Textual and Visual Media: Grade 10 Chemistry Curriculum Design (KICD 2025), Grade 10 Chemistry Learner's Books, hazard warning charts, solubility summary tables, industrial process flowcharts, past examination papers, and official marking schemes.

• File Size:

  49.47 KB
• Length:

  35 pages
• Category:

  Schemes of Work
• Level:

  Grade 10
• Subject:

  CHEMISTRY
• Posted By:

  Caleb_Peter

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