nio conducts a science experiment. he puts yeast into a bottle with water and sugar, and then caps the…

nio conducts a science experiment. he puts yeast into a bottle with water and sugar, and then caps the bottle with a balloon. he returns two hours later and notices there are bubbles on the surface of the mixture in the bottle and that the balloon has inflated, but there are no other apparent changes. what most likely happened? a non - chemical change, because there are no indicators of chemical changes taking place a chemical change, because the mixture changed color a chemical change, because a gas was produced a non - chemical change, because the changes that occurred are reversible

nio conducts a science experiment. he puts yeast into a bottle with water and sugar, and then caps the bottle with a balloon. he returns two hours later and notices there are bubbles on the surface of the mixture in the bottle and that the balloon has inflated, but there are no other apparent changes. what most likely happened? a non - chemical change, because there are no indicators of chemical changes taking place a chemical change, because the mixture changed color a chemical change, because a gas was produced a non - chemical change, because the changes that occurred are reversible

Answer

Brief Explanations:

Chemical changes involve the formation of new substances. Yeast ferments sugar in water, producing carbon - dioxide gas which inflated the balloon. This gas production indicates a chemical change. Color change is not the only indicator of a chemical change, and the reversibility of a change does not determine if it is chemical or not.

Answer:

a chemical change, because a gas was produced