Summary

• Description:

  The MS Word document comprises Form 3 Chemistry Paper 2 Mid Term 2 2026 Exam with Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  This paper rigorously assesses Form 3 Chemistry students on the periodic table, industrial processes, gas laws, and stoichiometric calculations — combining conceptual understanding with mathematical problem-solving in a format closely aligned to KCSE Chemistry Paper 2.

  • Duration: 2 Hours
  • Number of Questions: 7 questions (Questions 1–7)
  • Structure: All questions compulsory; answer all in spaces provided

  It covers the following topics:

  • Periodic table — electron arrangements, compound formulae, ionisation energy, atomic radius, and reactivity trends
  • Noble gases — group identification and uses
  • Ionic vs. covalent bonding in chlorides
  • Solvay process — flowchart interpretation, raw materials, recycled substances, and reaction equations
  • Carbon dioxide — uses as a fire extinguisher and laboratory preparation
  • Graham's law of diffusion — calculations comparing rates of diffusion of chlorine and hydrogen sulphide
  • Charles's law — table completion, graph plotting, extrapolation, and volume calculations
  • Fractional distillation — apparatus identification and function (ethanol and water separation)
  • Stoichiometry — mole calculations, percentage impurity in sodium carbonate, and carbon dioxide yield
  • Avogadro's law — statement and application to the reaction of sulphur dioxide and oxygen
• File Size:

  228.70 KB
• Length:

  10 pages
• Category:

  Exams
• Level:

  Form 3
• Subject:

  CHEMISTRY
• Posted By:

  Caleb_Peter

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