A-LevelPhysicsTemperatureOct/Nov 2010Paper 1 Q181 Mark
Below are four short paragraphs describing the molecules in a beaker of water at 50°C. Which paragraph correctly describes the molecules?
AThe molecules all travel at the same speed. This speed is not large enough for any of the molecules to leave the surface of the water. There are attractive forces between the molecules.
BThe molecules have a range of speeds. Some molecules travel sufficiently fast to leave the surface of the water. There are no forces between the molecules.
CThe molecules have a range of speeds. Some molecules travel sufficiently fast to leave the surface of the water. There are attractive forces between the molecules.
DThe molecules have a range of speeds. The fastest molecules are unable to leave the surface of the water. There are attractive forces between the molecules.
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of temperature within the Physicssyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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