Question

Milk sours in hot and humidity weather how can we say it is a chemical change give reason

Answer 1

Answer:

turning milk to sour is a chemical change because

1. it is an irreversible chemical change.
2. the base present in milk reacts with the acid which is added externally and hence create and acid base reaction.

Answer 2

Answer:

The souring of milk is classified as a chemical change . This is because it results in the production of sour tasting lactic acid . In this process new substance ( lactic acid ) is formed