SPH B209 STRUCTURE AND PROPERTIES OF MATTER

Examination Overview

  • Course Information: SPH B209: Structure and Properties of Matter

  • Academic Year: 2021/2022

  • Degree Programs: Bachelor of Science in Telecommunication, Bachelor of Education (Science), Bachelor of Science in Physics

  • Duration: 2 hours

  • Date/Time: 30/03/2022, Wednesday, 3.00 PM - 5.00 PM

  • Instructions:

    • Required materials: answer booklet, examination pass, and student ID

    • Total questions: Four (attempt question one and any two others)

    • Do not write on the question paper

Question 1 (40 Marks)

  • Definitions:

    • Bravis lattice: [1 mark]

    • Basis: [1 mark]

    • Primitive cell: [1 mark]

    • Dissociation energy: [1 mark]

  • Eigner-Seits Cell:

    • Definition and construction: [4 marks]

  • Cohesive Energy:

    • Definition: [2 marks]

    • Nature of interactions contributing to cohesive energy: [3 marks]

    • Comparison:

      • Van der Waals force vs. Hydrogen bonding: [2 marks]

  • Mathematics:

    • Given interaction energy formula, calculate A and B with given parameters: [5 marks]

    • Effect of increasing r by 20% on dissociation energy: [4 marks]

  • Fluid Dynamics:

    • Lamina flow: [1 mark]

    • Conditions for Bernoulli’s equation: [3 marks]

    • Calculate flow speeds in hose and nozzle: [4 marks]

  • Material Properties:

    • Distinction between crystalline and amorphous substances: [4 marks]

    • Calculate speed of water at Horseshoe Falls: [4 marks]

Question 2 (15 Marks)

  • Strong Bonds:

    • Description and illustrations of three types of strong bonds: [5 marks]

  • Hydraulic Pressure Calculation:

    • Pressure needed for 370m height using fresh water (density = 1000 kg/m3): [4 marks]

  • Material Properties:

    • Reason for brittleness in ionic solids vs. plasticity in metals: [2 marks]

    • Comparison of conductivity in metals vs. ionic/covalent solids: [4 marks]

Question 3 (15 Marks)

  • Density Comparison:

    • Explanation for metals being denser than ionic/covalent solids based on bond type and packing: [5 marks]

  • Weight Measurements:

    • Density of an object weighing 300 N in air, 265 N in water, 275 N in oil:

      • Calculate density of the object: [5 marks]

      • Calculate density of the oil: [5 marks]

Question 4 (15 Marks)

  • Kinetic Theory of Gases:

    • Explanation of how gases exert pressure on container walls: [5 marks]

  • Fluid Dynamics Calculation:

    • Speed of water from a pipe ending in a valve: [5 marks]

  • Viscosity Calculations:

    • Given capillary tube and flow rate, calculate:

      • Dynamic viscosity: [3 marks]

      • Kinematic viscosity: [2 marks]