What is crystallization? Is it a physical change or a chemical change?
Important Questions on Physical and Chemical Changes
State the type of change involved in the following. Give reason for your answer.
An apple slice turns brown when exposed to the air.
State the type of change involved in the following, Give reason for your answer.
The ozone layer in the Earth's atmosphere protects us from the Sun's ultraviolet radiation.
State the type of change involved in the following, Give reason for your answer.
Copper sulphate crystals are dissolved in water to make copper sulphate solution.
State the type of change involved in the following, Give reason for your answer.
Copper sulphate crystals are separated from copper sulphate solution by crystallization.
State the type of change involved in the following case. Give reason for your answer.
Washing dirty clothes with detergent in the washing machine.
State the type of change involved in the following case. Give reason for your answer.
Making coconut chutney in an electric mixer
