Thanks to http://www.exploratorium.edu/
for the idea.
for the title
We will explore other permutations [glucose, maltose, very dilute NaCl, flour, flour plus malted barley flour] in class to see what is fastest.
water 250 ml ~ 36 deg C
1 packet [15 g] Fleischmann's fresh compressed yeast
10 g sucrose
same as above plus 6 g NaCl to slow yeast activity
Time 45 mins at room temp
Time 90 min at room temp
Clearly the concentration of salt has slowed the rate and amount of gas production in the green balloon.