Question

Give an example of a physical change and explain the mechanism.

Answer 1

Energy changes are always accompanied by a specific chemical or physical change. Many changes occur in a natural environment, such as water evaporation, condensation, and rainfall, to name a few. All of these modifications are accompanied by a change in state.

Complete answer:
Physical properties are characteristics of a substance such as its shape, size, colour, and condition. A physical change is defined as a change in a substance's physical attributes. In most cases, a physical alteration can be reversed. There is no new substance generated as a result of such a transition.
Melting ice is a physical change since it simply involves a change in the physical state of water, from ice to water in the liquid state. Furthermore, no new chemical substances are created throughout the process, and the transformation is reversible. Simply freezing water will turn it back into ice.
As a result, melting of ice is a physical change.
Some other Examples of Physical Changes

1. Crushing a can
2. Boiling water.
3. Mixing sand and water.

Additional Information:
A chemical change is a transformation that results in the formation of one or more new compounds. A chemical reaction is another term for a chemical change. Chemical changes result in the formation of all new compounds. Food digestion in our bodies, fruit ripening, grape fermentation, and other chemical changes, for example, all occur as a result of a sequence of chemical changes.

Note:
When a physical change occurs, no energy changes occur. The amount of energy required to bring about a physical change is the same as the amount of energy required to reverse it. The energy level does not change.