physical change vs chemical change

A change that results in the formation of a new substance

A change that only affects the appearance or state of a material

A change that always produces heat or light

A change that cannot be reversed

It is often reversible

It does not form new substances

It involves a change in state only

It creates new substances with different properties

Color change

Change in shape

Gas formation

Precipitate formation

It helps memorize facts

It distinguishes between physical and chemical changes effectively

It makes experiments faster

It prevents mistakes in calculations

A physical change alters the appearance but not the composition, while a chemical change creates new substances.

A physical change always involves heat, while a chemical change does not.

A chemical change is always reversible, while a physical change is not.

A physical change only occurs in solids, while a chemical change occurs in liquids.