Summary

• Description:

  The MS Word document comprises KCSE 2026 Chemistry Paper 1 Prediction Paper with Answers (Set 1). 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.

  This paper tests fundamental theoretical principles across inorganic chemistry, physical chemistry, organic reactions, chemical energetics, and electrochemistry.

  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 28 (Questions 1 - 28)
  • Structure: Single section consisting of 28 compulsory short structured and calculation questions.

  It covers the following topics:

  • Radioactivity (Alpha and beta nuclear decay equations, nuclide identification, nuclear fission definition)
  • Separation of Mixtures and Purity (Magnetic separation, criteria of purity, immiscible liquid separation via separating funnel)
  • States of Matter and Kinetic Theory (Interconversions of matter, sublimation, kinetic theory of diffusion, Graham's law variables)
  • Periodic Table and Atomic Structure (Element uses based on properties, ionization energy parameters)
  • Carbon and its Allotropes (Structure and bonding of graphite, carbon (II) oxide reduction of copper (II) oxide)
  • Reactivity Series and Electrochemistry (Simple displacement cells, standard electrode potentials, EMF calculations, Faraday's laws of electrolysis)
  • Qualitative Analysis (Cation identification for lead (II) salts via precipitation, halide reactions)
  • Industrial Chemical Processes (Hydrochloric acid manufacture and glass beads role, zinc extraction from zinc blende in roaster furnaces)
  • Stoichiometry and Mole Concept (Empirical and molecular formula calculations, solution molarity, reacting gas volumes with iron-chlorine synthesis)
  • Organic Chemistry (Fermentation conditions, ethanol dehydration to ethene, addition/substitution reactions, haloalkanes)
  • Chemical Kinetics and Energetics (Factors affecting reaction rates, bond energy and enthalpy change of hydrogenation calculations)
  • Acids, Bases, and Salts (Reaction of sodium peroxide with water, oxygen gas collection, fractional crystallization and solubility curves)
  • Nitrogen and its Compounds (Thermal decomposition of ammonium nitrate, dinitrogen (I) oxide identification)
• File Size:

  1.26 MB
• Length:

  14 pages
• Category:

  KCSE Prediction Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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