First Law of Thermodynamics

Second Law of Thermodynamics

Third Law of Thermodynamics

Zeroth Law of Thermodynamics

ΔS ≥ 0

ΔH = 0

ΔG = 0

ΔE = 0

The entropy of a perfect crystal at absolute zero is zero.

The entropy of a system approaches a constant value as the temperature approaches absolute zero.

The entropy of a system is proportional to its temperature.

The entropy of a system is independent of its volume.

If two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium with each other.

The entropy of a system is proportional to its temperature.

The entropy of a system approaches a constant value as the temperature approaches absolute zero.

The total amount of energy in an isolated system remains constant.

Heat is the transfer of energy due to a temperature difference, while work is the transfer of energy due to a force.

Heat is the transfer of energy due to a force, while work is the transfer of energy due to a temperature difference.

Heat and work are the same thing.

Heat and work are not related.

ΔU = Q - W

ΔU = Q + W

ΔU = W - Q

ΔU = 0

The ratio of the work output to the heat input.

The ratio of the heat input to the work output.

The ratio of the work output to the internal energy change.

The ratio of the internal energy change to the work output.

The maximum possible efficiency of a heat engine operating between two reservoirs at different temperatures.

The minimum possible efficiency of a heat engine operating between two reservoirs at different temperatures.

The efficiency of a heat engine operating at a single temperature.

The efficiency of a heat engine operating at two different temperatures.

Heat cannot flow spontaneously from a colder to a hotter body.

Heat can flow spontaneously from a hotter to a colder body.

Heat can flow spontaneously from a colder to a hotter body, but only if work is done.

Heat cannot flow spontaneously from a hotter to a colder body, even if work is done.

It is impossible to construct a heat engine that operates without rejecting heat to a colder reservoir.

It is possible to construct a heat engine that operates without rejecting heat to a colder reservoir.

It is impossible to construct a heat engine that operates at a single temperature.

It is possible to construct a heat engine that operates at a single temperature.

The total entropy of an isolated system always increases over time.

The total entropy of an isolated system always decreases over time.

The total entropy of an isolated system remains constant over time.

The total entropy of an isolated system can increase or decrease over time.

Entropy is a measure of disorder.

Entropy is a measure of order.

Entropy is not related to disorder.

Entropy is related to disorder, but the exact relationship is unknown.

Entropy is the logarithm of the number of microstates that are consistent with a given macrostate.

Entropy is the logarithm of the number of macrostates that are consistent with a given microstate.

Entropy is the logarithm of the number of microstates that are inconsistent with a given macrostate.

Entropy is the logarithm of the number of macrostates that are inconsistent with a given microstate.

Entropy is proportional to temperature.

Entropy is inversely proportional to temperature.

Entropy is independent of temperature.

Entropy is related to temperature, but the exact relationship is unknown.

Entropy is proportional to volume.

Entropy is inversely proportional to volume.

Entropy is independent of volume.

Entropy is related to volume, but the exact relationship is unknown.