| Date | May 2015 | Marks available | 1 | Reference code | 15M.1.SL.TZ2.9 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 9 | Adapted from | N/A |
Question
A sample of solid copper is heated beyond its melting point. The graph shows the variation of temperature with time.
During which stage(s) is/are there an increase in the internal energy of the copper?
A. P, Q and R
B. Q only
C. P and R only
D. Q and R only
Markscheme
A
Examiners report
[N/A]
Syllabus sections
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