Answer : The correct option is, (C) a chemical change
Explanation :
Physical change : It is a change in which no new compound or substance is formed. In this, changes occurs only in the phase.
Chemical change : It is a change in which a new compound or substance is formed and releases some energy. There is no changes occurs in the phase.
For example :
When eggs cooked : It is a chemical change because a new compound or substance is formed by the temperature change. As we know that a liquid is present inside the egg, when we are cooking the egg then the liquid changes to solid by providing temperature. So, a temperature change in a reaction indicates a chemical change.
Hence, the correct option is, (C) a chemical change
