system
Given the following post, respond as if you're commenting on Reddit:
human
[ELI5] Why shouldn't you put out a grease fire with water?

Why doesn't it work / why does it make it worse?
What does work and why does it work?
gpt
Well, part of it is just that water displaces grease instead of mixing with it, so the result is that it splashes grease everywhere instead of putting out the fire. In addition to that, the water turns into vapor from the heat of the fire, and expands rapidly, slinging more grease outwards in smaller particles. Being divided into smaller particles increases the surface area of the grease, allowing it to burn a lot faster. This results in a far larger flame.