Question

definition of chemical change and physical change

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Answer 1

Definition of Chemical change and Physical change :-

Chemical change :- The type of change in which The Products are entirely different from the Reactants both physically and chemically.

Some Examples of chemical change:-

• Rusting of iron
• cooking
• Fireworks

Physical change :- The type of reactions which do not produce any new substances after the reaction.

Some Examples of Physical change :-

• Melting of ice
• Boiling water
• Breaking of a glass or a bottle

Answer 2

Answer:

Key Points. 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 reac