Entropy

Front

What is entropy?

Back

Entropy is a measure of the disorder or randomness in a system. It quantifies the amount of energy in a physical system that is not available to do work.

Front

Which state of matter has the highest entropy?

Back

Gas has the highest entropy compared to liquids and solids due to the greater molecular disorder and freedom of movement.

Front

How does entropy change during melting?

Back

Entropy increases during melting as the solid structure breaks down into a more disordered liquid state.

Front

What happens to the entropy of a system when it undergoes a phase change from liquid to gas?

Back

The entropy of the system increases as the molecules in the gas phase are more disordered and have more freedom of movement than in the liquid phase.

Front

What is the relationship between temperature and entropy?

Back

As temperature increases, the entropy of a system generally increases because higher temperatures provide more energy for molecular motion.

Front

What is the second law of thermodynamics?

Back

The second law of thermodynamics states that the total entropy of an isolated system can never decrease over time, and it will tend to increase, leading to greater disorder.

Front

How does the distribution of particles affect entropy?

Back

A more even distribution of particles in a given space results in higher entropy compared to a concentrated distribution.

Front

What is the significance of entropy in chemical reactions?

Back

In chemical reactions, an increase in entropy often favors the spontaneity of the reaction, as systems tend to move towards greater disorder.

Front

What is the entropy change when water freezes?

Back

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

Front

How does mixing different substances affect entropy?

Back

Mixing different substances increases entropy because it leads to a more disordered arrangement of particles.