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.3.7 Average Kinetic Energy of a Molecule – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
The mean translational kinetic energy of an ideal gas molecule is proportional to
the absolute temperature
the pressure
the molar mass
the volume
2.
The absolute temperature of an ideal gas is quadrupled. The rms speed of its molecules
quadruples
doubles
increases by 16
is unchanged
3.
The internal energy of 3.0 mol of ideal monatomic gas at 300 K is approximately
3.7 × 103 J
7.5 × 103 J
1.1 × 104 J
2.2 × 104 J
4.
Neon (M = 20) and helium (M = 4) are both at 300 K. Which statement is correct?
Neon atoms have greater mean kinetic energy
Helium atoms have greater mean kinetic energy
Both have the same speed
Both have the same mean kinetic energy but helium atoms are faster
5.
A graph of mean molecular kinetic energy against temperature in kelvin is
a parabola
a straight line through the origin
a horizontal line
an exponential curve
6.
The mean kinetic energy of molecules in a gas is 6.0 × 10−21 J. The temperature is approximately
580 K
145 K
290 K
1.5 × 102 K
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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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