Chemical Reactions and Daily Life

Chemical Changes

• The purpose of the activity described in the text is to observe and understand chemical changes that occur in everyday life.

Milk Left at Room Temperature

• When milk is left at room temperature during summers, it undergoes a chemical change, resulting in the growth of bacteria and hence spoilage.

Iron Exposure to Humid Atmosphere

• When an iron tawa/pan/nail is left exposed to a humid atmosphere, it undergoes rusting, which is a chemical change.

Fermentation of Grapes

• When grapes get fermented, it can be inferred that a chemical change has occurred, resulting in the conversion of grape juice into alcohol and carbon dioxide.

Digestion in the Human Body

• When food gets digested in our body, a chemical change occurs, where complex molecules of food are broken down into simpler molecules that can be absorbed and utilized by the body.