We’re being asked to **determine the effect of adding food coloring in water** on the entropy of the system.

Recall that ** entropy** is the degree of chaos or disorder of a system and that it depends on the following:

**1. Phase:** The gas phase has the *highest entropy*, followed by the liquid, and then the solid phase with the *lowest entropy*.

Gas > Liquid > Solid

**2. Complexity:** *More elements* in the compound leads to *higher entropy*.

Ex. NO_{3}(g) [4 elements] has higher entropy than NO_{2}(g) [3 elements].

**3. Mass:** The *greater the mass*, then the *greater the entropy*.

Ex. Xe(g) [greater mass] has higher entropy than He(g).

If you put a drop of food coloring in water and watch the drop disperse, is entropy increasing or decreasing?

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