Question

Difference b/w chemical & physical changes ?? With suitable examples

Answer 1

Answer:

. In a chemical change, the molecular composition of a substance completely changes and a new substance is formed. Some example of physical change are freezing of water, melting of wax, boiling of water, etc. .

.. In a physical change, no energy is produced. In a chemical change, energy is produced (heat, light, sound, etc.)

Answer 2

Answer:

chemical change that it can't reverse ex. burning a candle

physical change means that the changes into their initial state ex. melting of ice