Background Paragraph: There are many examples in the chemical world of changes in entropy. Phase transitions are one obvious example. When a substance makes a transition from the liquid state to the gaseous state, the particles have many more possible arrangements, because they are no longer confined to a specified volume in which they are close to each other; gas particles can move freely throughout their container. Vaporization represents an increase in entropy. In the opposite direction, a liquid loses entropy when it freezes to a solid. Because solids have very ordered structures, there are fewer possible arrangements of particles that would result in the properties associated with a solid. 
Story: George is going camping and forgot to bring water with him. He decides to collect water from a nearby stream and boil it to make it safe for drinking.
Given George removes the water from the fire to let it cool down so he can drink it, will the entropy increase or decrease? Will boiling the water increase or decrease entropy?