Summary

• Description:

  The PDF document comprises Catholic Diocese of Kakamega Evaluation Test Chemistry Paper 1 2026 Pre-Mock Exam with Marking Scheme. The marking scheme is in a different document.

  It was a KCSE Chemistry Paper 1 examination.

  This quick-fire theory examination challenges candidates across physical, inorganic, and organic chemistry, demanding mastery of chemical calculations, reaction mechanisms, and periodic trends.

  • Month Administered: July/August 2026
  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 28 (Questions 1 - 28)
  • Structure: Single section comprising 28 compulsory short-answer and computational questions

  It covers the following topics:

  • Atomic structure, electron configurations, and periodic table trends
  • Acids, bases, salts, pH scale, and water hardness reactions
  • Gas laws: Graham's law of diffusion and gas stoichiometry
  • Electrochemistry: reduction potentials, electrochemical cells, and molten lead(II) bromide electrolysis
  • Chemical energetics: bond energy computations and enthalpy changes
  • Reaction kinetics and chemical equilibrium (Le Chatelier's principle)
  • Laboratory preparation and properties of gases (nitrogen(IV) oxide, hydrogen, and carbon(II) oxide)
  • Organic chemistry: isomerism in alkenes and ethanol conversion reactions
  • Quantitative analysis: volumetric titration and empirical formula determinations
  • Radioactivity: nuclear versus chemical reactions and stability
  • Industrial extraction of metals (Down's cell for sodium)
• File Size:

  4.84 MB
• Length:

  12 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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