Is fermentation of sugar a physical change or chemical change?

It's a chemical change. Micro-organisms need glucose to power their bodies - and they convert each molecule of sugar into carbon dioxide and ethanol…which is the alcohol found in wine and beer. read more

Fermentation is a chemical change carried out by yeast or bacteria. The pathway depends on the end product. Most commonly sugar (C6H12O6) is converted to ethanol (C2H5OH) or lactic acid (CH3CHOHCOOH) with CO2 as a byproduct. read more

Fermentation is a chemical change. Sugars are chemically changed, and converted to carbon dioxide, ethanol, etc. read more