Summary

• Description:

  This Form 3 Chemistry Mid-Term 1 Exam 2025 with Marking Scheme or Answers is designed to assess students' understanding of various chemical concepts covered in the first half of the term.

  The exam is suitable for Form 3 students and covers a range of topics, including:

  • Preparation of ammonia gas (equation, experimental setup)
  • Empirical and molecular formula calculations
  • Percentage composition of fertilizers
  • Chemical tests for gases (oxygen and nitrogen I oxide)
  • Preparation of nitrogen IV oxide gas (experimental setup)
  • Solvay process (by-products and uses of sodium carbonate)
  • Preparation of nitric acid (experimental setup, uses)
  • Determining the formula of hydrated salts
  • Periodic table (group identification)
  • Isolation of nitrogen from air (equations, process)
  • Reaction of ammonia with lead II oxide (observations, deductions)

  The exam paper consists of 10 questions. The marking scheme or answers are provided in a separate file from the question paper.

  Please note that the number of pages indicated below refers to the exam paper only and does not include the marking scheme or answers.

• File Size:

  1.84 MB
• Length:

  6 pages
• Category:

  Exams
• Level:

  Form 3
• Subject:

  CHEMISTRY
• Posted By:

  Caleb_Peter

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