Question

Is burning of coal a physical change?

Answer 1

Physical change

• The changes that can be observed and specified like changes in color, hardness, rigidity, density, fluidity, melting point, boiling point, etc. are the physical changes.

Chemical Changes

• A chemical change is a change that results in the formation of new chemical substances.
• It involves the making or breaking bonds between atoms.

Burning of coal

• The burning of coal is not a physical change.
• When coal is burnt, the carbon is changed to Carbon dioxide(formation of the new products).
• This process is irreversible.
• Hence, the burning of coal is chemical changes.