what are physical and chemical change? with example?
Answers
Answer:
PHYSICAL CHANGE
➡️A physical change is a change to the physical—as opposed to chemical—properties of a substance. They are usually reversible.
➡️Eg:- shape (volume and size), color, texture, flexibility, density, and mass.
CHEMICAL CHANGE
➡️Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances.
➡️Eg:- Burning, Digestion, Boiling, Electroplating, Baking, metabolic reactions.
IN SHORT :-
➡️Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.
➡️Examples of chemical changes are burning, cooking, rusting, and rotting. ➡️Examples of physical changes are boiling, melting, freezing, and shredding.
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Explanation:
physical change is a change appearance of a substance not chemical composition example :-from solid to liquid or liquid to gas. chemical change causes a substance change into internal substance with a new chemical formula example:- souring of milk, digestion digestion of food