1. Give an example where heat is released in a physical change.
What is a physical change ? Give an example
Give an example where change in physical state occurs by change in pressure
(a) What is a physical change ? Give two examples of physical changes.
(b) What is chemical change ? Give two examples of chemical changes.
In an exam teacher asked students to give example of a change which is a physical as well as a chemical change? Which one of the following example is correct?