IB DP Physics Higher Level (2023 syllabus) · IB ib-phys-hl
B The particulate nature of matter
Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).
Practice questions on The particulate nature of matter
- Explain why the current through a metallic conductor is directly proportional to the poten… (4 marks, Explain)
- Explain why the resistance of a metallic conductor increases as its temperature increases,… (4 marks, Explain)
- Explain why the Carnot cycle is described as a reversible cycle and discuss what this impl… (4 marks, Explain)
- Explain, using the second law of thermodynamics and the concept of entropy, why a refriger… (4 marks, Explain)
- A heat engine operates between a hot reservoir at temperature T_H and a cold reservoir at … (4 marks, Explain)
- Explain why two identical resistors connected in parallel have a combined resistance that … (4 marks, Explain)
- Explain why the terminal potential difference of a battery decreases as the external resis… (4 marks, Explain)
- Explain why the brightness of a filament lamp decreases when a second identical filament l… (4 marks, Explain)
- Explain why the atmosphere emits infrared radiation back towards the Earth's surface, and … (4 marks, Explain)
- Explain why increasing the concentration of greenhouse gases in the atmosphere leads to an… (4 marks, Explain)
- Explain why the Earth's surface temperature remains approximately constant over time despi… (4 marks, Explain)
- Explain why the internal energy of an ideal gas depends only on its temperature and not on… (4 marks, Explain)
- Explain why the temperature of a pure substance does not change during a change of state, … (4 marks, Explain)
- Explain why, when a fixed mass of ideal gas undergoes an isothermal compression, the press… (4 marks, Explain)
- Explain why evaporation from the surface of a liquid causes the temperature of the remaini… (4 marks, Explain)
- Explain why two objects made of different materials but with the same mass, initially at t… (4 marks, Explain)
- Explain why carbon dioxide is a greenhouse gas but nitrogen (N₂) is not, with reference to… (4 marks, Explain)
- Explain why a planet with a thin atmosphere has a much greater diurnal (day–night) tempera… (4 marks, Explain)
- Explain, using the kinetic model of an ideal gas, why the pressure of a fixed mass of gas … (4 marks, Explain)
- Explain, using the kinetic model of an ideal gas, why the pressure exerted by a fixed mass… (4 marks, Explain)
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