Respuesta :

a chemical change is an irreversible reaction like burning of paper to ashes, while a physical change is a reversible reaction like ice to water and then water back to ice.
martha1906
There are several differences between a physical and chemical change in matter or substances. A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.

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