Summary

• Description:

  The MS Word document comprises the Grade 8 Integrated Science Paper 2 (Practical) Mid Term 2 Exam 2025 with Marking Scheme. The PDF version is also available upon your request.

  The exam paper, titled "INTEGRATED SCIENCE (Practical) PAPER 2," consists of 2 practical questions. The total time allocated for the paper is 1 hour 30 minutes. The exam is marked out of a total of 30 marks.

  The practical tasks and concepts covered in this exam are:

  • Question 1 (20 marks): Determining Density of Irregularly Shaped Solids
    • Objective: To determine and compare the densities of two irregularly shaped solid objects (Solid A and Solid B).
    • Apparatus Provided: Two irregularly shaped solid objects (Solid A, Solid B), a beam balance or electronic scale, a measuring cylinder, and water.
    • Procedure Involves:
      • Measuring the mass of each solid object using the balance.
      • Measuring the volume of each solid object using the water displacement method with a measuring cylinder. This involves recording an initial volume of water, immersing the solid, and recording the final volume to find the volume of the solid by subtraction.
      • Calculating the density of each solid using the formula: Density = Mass / Volume.
    • Analysis and Reporting Requirements:
      • Recording all mass and volume measurements.
      • Showing the working for density calculations for both solids.
      • Stating which solid is denser based on the calculated values.
      • Stating the SI units for mass, volume, and density.
      • Listing two safety precautions observed during the practical.
      • Naming three laboratory instruments necessary for conducting the experiment.
  • Question 2 (10 marks): Investigating Acids, Bases, and Neutral Solutions
    • Objective: To use a provided indicator solution (labelled Solution X) to determine whether five different test solutions (labelled A, B, C, D, and E) are acidic, basic, or neutral.
    • Materials Provided: Test solutions A, B, C, D, E; Solution X (indicator); lemon juice (known acidic solution); wood ash solution (known basic solution).
    • Procedure Involves:
      • Observing and recording the color change of Solution X when added to lemon juice (to establish the indicator's color in an acidic solution).
      • Observing and recording the color change of Solution X when added to wood ash solution (to establish the indicator's color in a basic solution).
      • Adding Solution X to each of the test solutions (A to E) individually and recording the observed color changes.
    • Analysis and Reporting Requirements:
      • Recording all observations (color changes) in a provided table.
      • Drawing conclusions about whether each test solution (A to E) is acidic, basic, or neutral based on the comparison of color changes with those observed for lemon juice and wood ash solution.
• File Size:

  24.08 KB
• Category:

  Exams
• Level:

  Grade 8
• Subject:

  INTEGRATED SCIENCE
• Posted By:

  Caleb_Peter

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