Curriculum
Course: IB Physics HL
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Curriculum

IB Physics HL

Theme A — Space, Time and Motion

0/125 Dr Dabour Hub Science Diagram and Course Material

Theme B — The Particulate Nature of Matter

0/105 Dr Dabour Hub Science Diagram and Course Material

Theme C — Wave Behaviour

0/73 Dr Dabour Hub Science Diagram and Course Material

Theme D — Fields

0/77 Dr Dabour Hub Science Diagram and Course Material

Theme E — Nuclear and Quantum Physics

0/89 Dr Dabour Hub Science Diagram and Course Material

Tools and Inquiry — IB Physics skills

0/43 Dr Dabour Hub Science Diagram and Course Material
Quiz

B.4.3 Entropy – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
The SI unit of entropy is
J
J mol−1
J K−1
K
2.
The entropy of a macrostate is proportional to
ln Ω
the number of microstates Ω
Ω2
1/Ω
3.
Which process shows an increase in the entropy of the system?
Water vapour condensing
A gas being compressed
Water freezing
A gas expanding into a larger volume
4.
Four coins are tossed. The macrostate with the greatest entropy is
four heads
two heads and two tails
three heads
four tails
5.
Two independent systems have entropies S1 and S2. The entropy of the combined system is
S1 + S2
S1S2
S1/S2
ln(S1S2)
6.
A gas of N molecules expands freely to twice its volume. The entropy increase is
zero
kB ln 2
2NkB
NkB ln 2
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Part of Theme B — The Particulate Nature of Matter — see every lesson and quiz in this unit.
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