Entropy

Mr. Anderson explains entropy as the dispersal of matter and energy, using examples like phase changes and stoichiometry. He discusses irreversible processes and the second law of thermodynamics, emphasizing that entropy in an isolated system never decreases. The video also covers how increasing temperature affects entropy and includes interactive video examples to illustrate these concepts.

What happens to the entropy of a system when milk is spilled?

• Entropy decreases

• Entropy becomes zero

• Entropy remains the same

• Entropy increases

Which of the following phase changes results in an increase in entropy?

• Gas to liquid

• Solid to liquid

• Gas to solid

• Liquid to solid

How does increasing the volume of a gas affect its entropy?

• Entropy becomes negative

• Entropy remains constant

• Entropy increases

• Entropy decreases

What is the effect of increasing temperature on the entropy of a gas?

• Entropy becomes zero

• Entropy decreases

• Entropy remains unchanged

• Entropy increases

In the context of entropy, what is an irreversible process?

• A process that decreases entropy

• A process that cannot reverse naturally

• A process that can easily reverse

• A process that maintains constant entropy

According to the second law of thermodynamics, what happens to entropy in an isolated system?

• Entropy becomes zero

• Entropy increases

• Entropy remains constant

• Entropy decreases

When considering stoichiometry, how can you determine if entropy has increased?

• By observing the color change

• By measuring the temperature change

• By comparing the number of moles before and after a reaction

• By counting the number of atoms