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Course: AS Physics 9702
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AS Physics 9702

1. Physical quantities and kinematics

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2. Dynamics, forces and pressure

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3. Work, energy, power and deformation

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4. Waves and superposition

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5. Electricity and D.C. circuits

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7. Circular motion and gravitational fields (A Level)

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8. Thermal physics (A Level)

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10. Electric fields and capacitance (A Level)

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11. Magnetic fields and alternating currents (A Level)

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12. Quantum and nuclear physics (A Level)

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13. Medical physics and astronomy (A Level)

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Quiz

AS & A Level Physics 9702 – 8.2 Ideal gases – Quiz

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Ideal gases AS Physics quiz: free practice for AS Physics 9702. Work through this Ideal gases AS Physics quiz and get instant feedback on every answer. If you get stuck, review the 8.2 IDEAL GASES — Notes lesson. More practice: AS Physics 9702 — all units. Syllabus: Cambridge AS & A Level Physics 9702 syllabus.

1.

One mole of any substance contains

1.38 × 10⁻²³ particles
8.31 particles
6.02 × 10²³ particles
1000 particles
2.

The equation of state for an ideal gas is

pV = nRT
pV = constant only
p = nRT
V = pT
3.

A gas at 300 K and 1.0 × 10⁵ Pa occupies 2.0 × 10⁻³ m³. How many moles are present? (R = 8.31 J K⁻¹ mol⁻¹)

0.080 mol
0.67 mol
12 mol
0.0080 mol
4.

Which is an assumption of the kinetic theory of ideal gases?

Molecules attract one another strongly
The volume of the molecules is negligible compared with the volume of the gas
Collisions are inelastic
All molecules have the same speed
5.

The mean translational kinetic energy of a molecule of an ideal gas is

kT
(1/2)kT
(3/2)kT
3kT
6.

The pressure of an ideal gas is given by

p = ρ
p = ½ρ
p = 3ρ
p = ⅓ρ
7.

The Boltzmann constant k is related to the molar gas constant R by

k = R/N_A
k = RN_A
k = N_A/R
k = R²
8.

The thermodynamic temperature of an ideal gas is doubled. The r.m.s. speed of its molecules

increases by a factor of √2
doubles
quadruples
is unchanged
9.

Gas pressure on the walls of a container is caused by

the weight of the gas
the change of momentum of molecules colliding with the walls
attraction between molecules
the expansion of the walls
10.

An ideal gas is one that

liquefies easily
has strong intermolecular forces
has molecules of large volume
obeys pV ∝ T at all pressures, volumes and temperatures
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