Summary

• Description:

  The MS Word document comprises LENANA SCHOOL NAIROBI INTERNAL EXAMS Chemistry Paper 1 2026 Mock Exam with Answers (Marking Scheme). The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a KCSE Chemistry Paper 1 examination.

  This paper tests broad foundational competencies across the chemistry curriculum, emphasizing chemical calculations, laboratory preparations, reaction energetics, and qualitative inorganic deductions.

  • Total Marks: 80
  • Number of Questions: 25 (Questions 1-25)
  • Structure: Single compulsory paper containing short-answer and computational questions.

  It covers the following topics:

  • Organic chemistry: Homologous series, preparation of soapless detergents, isomerism in alkenes, dehydration of ethanol, and empirical formula calculations
  • Chemical kinetics and equilibrium: Factors affecting reaction rates and Le Chatelier's principle applied to the Haber process
  • States of matter and physical chemistry: Latent heat changes, criteria for purity, combined gas law calculations, and bond energy determinations
  • Electrochemistry: Electrolysis of molten sodium bromide and identification of electrolytic cell components
  • Periodic table trends: Non-metal reactivity and periodic group properties
  • Inorganic chemistry: Catalytic oxidation of ammonia, laboratory preparation of nitrogen (I) oxide and oxygen from peroxides, industrial manufacture of hydrochloric acid, and chemical bonding types
  • Qualitative analysis: Identification of amphoteric cations (lead ions) and confirmatory precipitation tests
  • Separation of mixtures and practical techniques: Separating funnel applications and magnetic separation
• File Size:

  293.74 KB
• Length:

  12 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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