Summary

• Description:

  The PDF document comprises Mirror Jet 2024 Chemistry Paper 1 Exam with Answers and Marking Scheme. The marking scheme is in a different document.

  It was a KCSE Chemistry (Theory) Paper 1 (233/1) examination administered during the Mirror Jet Exams Term Two 2024 series.

  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 27 (Questions 1–27)

  The paper consisted of structured short-answer questions assessing knowledge in inorganic chemistry, physical chemistry, organic chemistry, and practical laboratory skills. :contentReference[oaicite:0]{index=0}

  It covered the following topics:

  • Atomic structure and comparison between ionic and atomic radii
  • Complex ion formation with ammonia and qualitative analysis of metal ions
  • Rates of chemical reactions using magnesium and hydrochloric acid experiments
  • Graph interpretation in reaction rate experiments
  • Empirical and molecular formula calculations
  • Homologous series and structural formulae of organic compounds
  • Periodic table trends including reactivity and electron arrangement
  • Acids, bases and pH identification of solutions
  • Stoichiometric calculations involving zinc and hydrochloric acid
  • Qualitative analysis procedures for identifying ions
  • Determination of empirical formula from reduction of metal oxides
  • Industrial organic chemistry including production of PVC from chloroethene
  • Properties and separation of gases
  • Electrolysis of concentrated sodium chloride solution
  • Precipitation reactions and ionic equations
  • Diffusion of gases and application of Graham’s law
  • Combustion reactions of hydrocarbons such as ethane
  • Extraction of aluminium from bauxite and electrolysis of aluminium oxide
  • Radioactivity including types of radiation and half-life calculations
  • Electroplating and applications of electrolysis
  • Energy level diagrams and enthalpy calculations
  • Faraday’s laws in electrolysis calculations
  • Chemical equilibrium and effects of temperature and pressure
  • Atmospheric gases and their environmental effects
  • Physical and chemical changes observed in laboratory experiments
  • Allotropy and reactions of elements when burned in air
  • Solubility experiments and determination of solubility
  • Preparation, drying and testing of ammonia gas
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  CHEMISTRY

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