Summary

• Description:

  The MS Word document comprises the Form 3 Chemistry Paper 1 End Term 3 2025 Exam with Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  The exam paper contains 28 compulsory questions, is designed to be completed within a duration of 2 hours, and is marked out of a total of 80 marks.

  The examination covers a broad range of topics from the Chemistry syllabus up to Form 3, including:

  • Introduction to Chemistry & Matter: The Bunsen burner, changes of state, and various methods for the separation of mixtures like distillation, sublimation, and chromatography.
  • Atomic Structure and The Periodic Table: Isotopes, calculation of relative atomic mass, and periodic trends such as atomic radii and ionization energy.
  • Structure and Bonding: Properties of metallic, ionic, and giant covalent structures, as well as drawing diagrams for covalent and dative bonds.
  • Chemical Reactions, Moles, and Stoichiometry: Stoichiometric calculations, determination of empirical formulae, combustion, rusting, and preparation of salts.
  • The Gas Laws: Application of Boyle's Law and Graham's Law of Diffusion.
  • Acids, Bases, and Electrochemistry: Interpretation of the pH scale and the principles of electrolysis.
  • Chemistry of Elements: Topics on Hydrogen, Oxygen, Carbon (oxides), Nitrogen (Ostwald process), Sulphur (Frasch process), and Chlorine.
  • Organic Chemistry: Extraction of oils from natural sources and simple reaction pathways of alkanes.
• Category:

  Exams
• Level:

  Form 3
• Subject:

  CHEMISTRY

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