Summary

• Description:

  The MS Word document comprises KCSE 2026 Chemistry Paper 1 Prediction Paper with Answers (Set 3). The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a KCSE Chemistry Paper 1 prediction examination designed to prepare candidates for the national assessment.

  The paper comprises 26 concise, curriculum-wide questions evaluating physical, inorganic, and organic chemistry principles, stoichiometric calculations, and qualitative analysis.

  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 26 (Questions 1 - 26)
  • Structure: Comprehensive structured theory paper; all questions are compulsory

  It covers the following topics:

  • Extraction of Metals (Chief ores of aluminium, zinc, and copper)
  • Nitrogen and its Compounds (Dinitrogen tetraoxide reaction with water)
  • Industrial and Commercial Chemical Uses (Silver bromide, hydrated calcium sulphate, tincture of iodine)
  • Periodic Trends and Atomic Structure (Atomic radius, melting point trends, gas stoichiometry at s.t.p.)
  • Chlorine and Sulphur Bleaching (Oxidation vs. reduction bleaching mechanisms)
  • Electrochemistry (Electrochemical cells, cell notations, half-cell equations, platinized platinum functions)
  • Chemical Reactions of Metals (Reactivity of iron, zinc, and copper with steam)
  • Qualitative Analysis (Chloride ion confirmation, precipitation reactions)
  • Organic Chemistry (Halogenation of hydrocarbons, condensation polymerization, soap cleansing mechanics)
  • Chemical Equilibrium (Le Chatelier's principle in bromine water equilibrium, definition of dynamic equilibrium)
  • Gas Preparation and Drying (Collection and drying of nitrogen(IV) oxide, sulphur(VI) oxide, and ammonia)
  • Salt Preparation and Separation Techniques (Insoluble carbonate preparation, sublimation, caffeine solvent extraction)
  • Atomic Theory and Subatomic Particles (Charge neutrality, nuclear stability, cation formation)
  • Volumetric and Stoichiometric Analysis (Acid-base titrations, empirical and molecular formula calculations)
  • Chemical Safety and Storage (Water and paraffin oil storage rationale, testing for carbon(IV) oxide)
  • Energetics (Lattice and hydration enthalpy, heat of solution determination)
  • Acids, Bases, and Indicators (Brønsted-Lowry acid-base theory)
  • Corrosion and Prevention (Rust prevention, sacrificial protection, electroplating)
  • Applied Combustion Chemistry (Charcoal jiko reaction zones)
  • Transition Elements and Bonding (Manganese oxidation numbers, giant ionic vs. simple molecular melting point comparisons)
• File Size:

  98.19 KB
• Category:

  KCSE Prediction Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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