Summary

• Description:

  The MS Word document comprises ACK Joint Examination Chemistry Paper 1 2026 Pre-Mock Exam with Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  It was an ACK Joint Evaluation Chemistry Paper 1 examination covering physical, inorganic, and organic chemistry. Form 4 students downloading this question paper can sharpen their problem-solving skills across qualitative analysis, stoichiometry, and chemical reaction trends for KCSE preparation.

  • Month Administered: July 2026
  • Duration: 2 Hours
  • Total Marks: 80 Marks
  • Number of Questions: 29 Questions

  It covers the following topics:

  • Atomic Structure & Periodicity
    • Electronic configurations, period identification, and ionic vs. atomic radii
    • Isotopes, relative abundance, and relative atomic mass (RAM) calculations
    • Periodic trends in melting points of Period 3 oxides
    • Electronegativity, ionization energy, and electron affinity definitions
  • Qualitative Analysis & Salts
    • Cation and anion confirmatory tests (sodium hydroxide, aqueous ammonia, barium nitrate)
    • Reactions of amphoteric oxides (aluminum oxide) with acids and bases
    • Thermal decomposition of nitrate and carbonate salts
    • Preparation of insoluble salts (copper II carbonate)
  • Physical & Environmental Chemistry
    • Graham's Law of gas diffusion calculations
    • Molar gas volume, ideal gas equation, and mass-volume stoichiometric calculations
    • Types of Bunsen burner flames (luminous vs. non-luminous)
    • Electrolysis of molten salts (potassium chloride) and electrode reactions
    • Industrial uses of noble gases (Helium in weather balloons)
    • Environmental pollution definitions and particulate vs. gaseous pollutants
  • Organic Chemistry
    • Hydrocarbon classification, bromine water test, and potassium permanganate reactions
    • Polymerization, monomer structures, and polymer molecular mass calculations
    • Reactions of organic compounds to form haloalkanes
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  CHEMISTRY

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