Thermodynamics Practice

Front

What is entropy?

Back

Entropy is a measure of the disorder or randomness in a system. In thermodynamics, it indicates the amount of energy in a physical system that is not available to do work.

Front

What happens to the entropy of a system when water freezes?

Back

The entropy of the system decreases when water freezes because the molecules become more ordered in the solid state.

Front

At what temperature does water freeze on the Celsius scale?

Back

Water freezes at 0 degrees Celsius.

Front

What is the relationship between temperature and kinetic energy?

Back

Temperature is a measure of the average kinetic energy of the particles in a substance.

Front

What is a conductor?

Back

A conductor is a material that allows the flow of electric current or heat. Metals, like copper and aluminum, are good conductors.

Front

What happens to the volume of a gas when its temperature decreases?

Back

The volume of a gas decreases when its temperature decreases, according to Charles's Law.

Front

What is the first law of thermodynamics?

Back

The first law of thermodynamics states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact with each other reach the same temperature and no heat flows between them.

Front

What is the difference between an insulator and a conductor?

Back

An insulator is a material that does not allow the flow of electric current or heat, while a conductor does.

Front

What is the Kelvin scale?

Back

The Kelvin scale is an absolute temperature scale used in science, where 0 K is absolute zero, the point at which all molecular motion stops.