Below are possible answers for the crossword clue This will make the balloon go up.
6 letter answer(s) to this will make the balloon go up
HELIUM
a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)
Other crossword clues with similar answers to 'This will make the balloon go up'