| Date | May 2015 | Marks available | 1 | Reference code | 15M.1.HL.TZ2.9 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 9 | Adapted from | N/A |
Question
A block of ice at 0°C is placed on a surface and allowed to melt completely to give water at 0°C. During this process the entropy of the
A. molecules in the block has decreased.
B. surroundings has increased.
C. universe has increased.
D. universe has decreased.
Markscheme
C
Examiners report
[N/A]
Syllabus sections
Show 101 related questions
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- 17N.3.SL.TZ0.8b: Using the axes, sketch the three-step cycle.
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- 17N.3.SL.TZ0.10a: Complete the diagram, with a Newtonian mounting, continuing the two rays to show how they...
- 17M.3.SL.TZ2.7b: State and explain at which point in the cycle ABCA the entropy of the gas is the largest.
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- 17M.3.SL.TZ2.7a.iii: Show that the thermal energy removed from the gas for the change BC is approximately 330 J.
- 17M.3.SL.TZ2.7a.ii: Show that the temperature of the gas at C is 386 K.
- 17M.3.SL.TZ2.7a.i: Justify why the thermal energy supplied during the expansion AB is 416 J.
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- 11M.1.HL.TZ2.12: The diagram shows the...
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- 11M.2.HL.TZ1.4a: Calculate the temperature of the gas in state B.
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- 10N.2.HL.TZ0.B3d: (i) State the meanings of \(Q\) and \(W\). \(Q\): \(W\): (ii) Describe how the...
