Which of the following situations represents a decrease in entropy (negative entropy change)?

Question

A match burning
snow melting
sugar dissolving in water
water freezing

Answer 1

water freezing
the water is becoming more ordered

Answer 2

Since snow melting and water freezing are opposite changes, we can kill the 50-50 by removing a and c from consideration.
Since sugar dissolving is a solid-to-liquid state, I am going to classify snow melting into the same category, leaving the assertion that water freezing is a decrease in entropy; which makes sense when you hear the term "ice crystals" i.e., crystals are generally a very organized form of a solid.

Answer 3

a million. beneficial 2. beneficial 3. beneficial 4. unfavorable?? 5. unfavorable Entropy is beneficial each time it makes a much bigger mess or creates disorderly. Entropy is unfavorable each time it cleans up a large number. as an occasion condensing mist interior the air into one droplet organizes the mess and which may be unfavorable entropy. i'm hoping that's making experience.

Answer 4

water freezing


you can use physical states to determine entropy changes
solids have less entropy than liquids and liquids have less entropy than gases