You put a lidded pot of water on a stove.
Will it boil faster with the lid on or off?

Q: You put a lidded pot of water on a stove. Will it boil faster with the lid on or off?

With the lid on — less heat escapes as steam.. Every escaping water molecule carries a lot of energy with it. Trapping it means faster warming. Convection wins.

Question

Accepted Answer

With the lid on — less heat escapes as steam. — Every escaping water molecule carries a lot of energy with it. Trapping it means faster warming. Convection wins.