Question

Which of the following is an example of a negative entropy change?
a. Picking up marbles and placing them in a bag.
b. Paint spilling onto the floor from a can.
c. Grains of sand being dropped onto the carpet.
d. Dropping a drop of red dye into water.

Answer 1

think about organization, the more organized something gets the more negative it's entropic value becomes

Answer 2

I think it is a. Because, it is decreasing its disorder and organizing the little pieces.

Answer 3

yep, thats correct.

Answer 4

Okay :)