| Date | May 2013 | Marks available | 1 | Reference code | 13M.1.sl.TZ1.17 |
| Level | SL | Paper | 1 | Time zone | TZ1 |
| Command term | Identify | Question number | 17 | Adapted from | N/A |
Question
Which graph best represents the relationship between the average kinetic energy of molecules of a gas and temperature in K?
Markscheme
D
Examiners report
Some respondents mentioned in their G2 forms that the question was not appropriate as they could not find in the syllabus details where the specific relationship between temperature in K and average kinetic energy of molecules of gas is mentioned. In assessment statement 6.2.1 in the syllabus details it is clearly stated that “average kinetic energy is proportional to temperature in kelvins”. 48.33% of the candidates chose the correct answer D. The discrimination index for this question was 0.42 which is reasonably good.
Syllabus sections
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