Question

When yeast is added to bread dough, it produces carbon dioxide. The pressure of the gas causes the dough to expand. Explain how the rising of dough is an example of both a physical and a chemical change

Answer 1

well for yeast to produce CO2 it needs to dissolve starch and other sugars from dough which is chemical change and then when it produces CO2 it expands the dough which is physical change

Answer 2

OK thank you so much! It is so helpful when you always explain yourself!