Entropy

Front

What is entropy?

Back

Entropy is a measure of the disorder of a system.

Front

What happens to entropy when temperature increases?

Back

Entropy always increases when temperature increases.

Front

In which direction does heat transfer occur?

Back

Heat transfer always occurs from hot to cold.

Front

What type of reaction is it when HCl reacts with Zn and gives off heat?

Back

It is an exothermic reaction.

Front

Which phase of matter has the greatest motion and least orderly arrangement?

Back

Gas has the greatest motion and least orderly arrangement.

Front

What is the relationship between entropy and the disorder of a system?

Back

Higher entropy indicates greater disorder in a system.

Front

How does entropy relate to 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.

Front

What is an example of an exothermic reaction?

Back

Combustion of fuels, such as burning wood or gasoline, is an example of an exothermic reaction.

Front

What is an example of an endothermic reaction?

Back

Photosynthesis in plants is an example of an endothermic reaction.

Front

How does temperature affect the kinetic energy of particles in a gas?

Back

As temperature increases, the kinetic energy of particles in a gas also increases.