This will effervesce during the time the acid is dissolving the zinc.
The class which is about to effervesce socially holds a meeting.
It will effervesce; stir it while foaming into the mixture, which should be a thick batter.
A wineglass of the cream to a tumbler of water, with sufficient carbonate of soda to make it effervesce.
Bubbles of gas were formed rapidly, causing ...