system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does water make grease fires worse?
gpt
Three facts: water is heavier than oil, burning oil is hotter than the boiling point of water, and when water boils, it expands- by a lot.

So when water falls onto a pool of burning oil, it sinks, then boils, then it blows oil- burning oil- all over your kitchen.