Question

5 (a).Classify the following changes as physical and chemical change

Fermentation of sugar solution to alcohol

Answer 1

• Physical changes involve changes in physical appearances like shapes, sizes, and phase transitions. They are generally temporary. While chemical changes are usually permanent. They involve the formation of new substances.
• Fermentation of sugar solution to alcohol is a chemical change. Sugar solution has different physical as well as chemical properties from the alcohol which is a characteristic of chemical change.