Summary

• Description:

  The PDF document comprises Alliance Boys High School Chemistry Paper 1 2024 Mock Exam with Answers (Marking Scheme). The marking scheme is towards the end of the document.

  It is a KCSE Chemistry Paper 1 (233/1) mock examination.

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

  It covered the following topics:

  • Valency and periodic table classification of elements
  • Separation techniques including evaporation and crystallization
  • Physical and chemical changes such as sublimation and polymerization
  • pH values and identification of acidic, neutral, and alkaline solutions
  • Reactions of acids with carbonates and factors affecting gas evolution
  • Composition of air and removal of its components using chemical reagents
  • Rusting of iron and experimental study of oxygen in air
  • Classification of oxides as acidic, basic, neutral, or amphoteric
  • Reduction reactions and reactivity series concepts
  • Reactivity of metals with water and hydrogen ignition
  • Titration calculations and solution concentration
  • Isotopes and relative atomic mass calculations
  • Structure and properties of giant covalent compounds
  • Ionic bonding, electron arrangement, and conductivity conditions
  • Oxidation numbers and redox reactions
  • Preparation of insoluble salts through precipitation
  • Dot-and-cross diagrams for covalent and coordinate bonding
  • Water of crystallization and efflorescence
  • Solubility concepts and calculations
  • Gas laws including Graham’s law of diffusion
  • Laboratory preparation and collection of gases
  • Allotropes of sulphur and changes with temperature
  • Energy calculations using enthalpy changes and fuel combustion
  • Organic chemistry including halogenation and structural formulas
  • Acid-base theory including Brønsted–Lowry concepts
  • Water hardness and soap lather experiments
  • Electrode potentials and electrochemical cell calculations
  • Radioactivity including decay series and half-life calculations
  • Reaction rates and interpretation of graphical data
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  CHEMISTRY

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