Show why dough Is Knea kneaded aed it if bread should be baked out of dough or without yeast or baking powder it would turn into a hard indigestible mass kneading makes br bread ea 1 I or cake in structure that Is full of holes for the process entraps particles of alit air which expand during baking and puff up the dough in the case of baking powder the addition of water causes the tartaric tartar lc acid in the powder to act on tine the baking soda sodium acid carbonate to generate bubbles of carbon dioxide inside the dough these too expand upon baking lilling filling the cake with numerous holes the yeast as it mes lives arid grows in tile dough gives ives off carbon dioxide the result on the dough Is 18 the same as before popular science monthly |