Question

Does the entropy increase when a substance is heated with no change of state?

1) Yes, because the molecules move faster and have more energy.
2) No, because the molecules remain in the same state.
3) Yes, because the temperature increases.
4) No, because the heat is not transferred to the substance.

Answer 1

Yes, the entropy increases when a substance is heated with no change of state because the molecules move faster and have more energy.

Step-by-step explanation:

The correct answer is option 1) Yes, because the molecules move faster and have more energy.

Entropy is a measure of the degree of disorder or randomness in a system. When a substance is heated, the molecules gain kinetic energy and move faster. This increase in molecular motion leads to a greater disorder in the system, hence increasing the entropy.

For example, when a solid is heated, the particles vibrate more vigorously, and when a liquid is heated, the particles move more freely, increasing the randomness and entropy of the system.