system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is happening when I add salt to already boiling water?

I know about boiling point elevation, but this is something different. I noticed today when I had a pot of boiling water (already raised to a boil) for pasta and I added salt to it that it began to bubble much more violently before calming down and stopping. What was happening there?
gpt
Nucleation, probably. The rough, uneven surface of the salt crystal allows for pockets of air to get trapped when they enter the water, and then as they release the water appears to boil more violently.