Question

define the following with example
physical reaction.

Answer 1

Physical changes occur when objects or substances undergo a change that does not change their chemical composition. This contrasts with the concept of chemical change in which the composition of a substance changes or one or more substances combine or break up to form new substances.

Examples of Physical Changes

Crushing a can.

Melting an ice cube.

Boiling water.

Mixing sand and water.

Breaking a glass.

Dissolving sugar and water.

Shredding paper.

Chopping wood.

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Answer 2

$\huge\textbf{Physical Reaction :}$


The reactions which do not result in formation of new substance is known as Physical Reaction.


→ These are temporary reactions and can be reversed easily.


→ In these shape changes.


→ In these no energy is produced.

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$\huge\textbf{Example :}$


→ Melting.


→ Boiling.


→ Freezing.


→ Cutting.


→ Breaking.


→ Dissolving.

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