when metals and acids are combined, why does it produce bubbles?

Question

when metals and acids are combined, why does it produce bubbles?

In: 3

Answer 1

It produces bubbles because it produces gas. Specifically, hydrogen gas. Acids are, by definition, molecules prone to giving up hydrogen when they react with things.

Something has to take the place of the hydrogen in the molecule, though, and that is the metal. In return, the metal gives up an electron, which is what allows it to be free of the molecule.