When a sample of ideal gas expands isothermally

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

When a sample of ideal gas expands isothermally, which of the following is false? (1) The pressure of the gas changes. (2) The gas does work on the surroundings. (3) The internal energy of the gas changes. (4) Heat is gained by the gas.

Related theory

First Law of Thermodynamics
Laws of Thermodynamics
Thermodynamic Processes
The first law of thermodynamics
Thermodynamics
Isothermal and adiabatic processes
Isothermal process

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