form bubbles form bubbles /ˈfɔ😐ːrm ˈbʌbəlz/

verb

1. Become bubbly, frothy or foaming  ( effervesce , fizz , form bubbles , foam , froth , sparkle )
   become bubbly, frothy or foaming
    The boiling soup was frothing
   The boiling soup was frothing
    The river was foaming
   The river was foaming
    Sparkling water
   sparkling water