Question

Define Physical change.

Answer 1

Hint: Anything in our environment undergoes changes. Physical or chemical changes may occur. All that has mass and consumes space is referred to as "matter." It has physical and chemical properties and is made up of small particles.
The presence and visible properties of matter are examples of physical properties. Color, odour, flavour, solubility, rigidity, fluidity, melting and boiling points, and so on are certain physical properties.

Complete answer:
Physical change:
Physical change occurs as the physical characteristics of a substance change. A change in state of matter, colour, odour, solubility, and other physical changes are all examples of physical change.
The chemical or physical structure of matter is not altered through a physical alteration. Molecules rearrange themselves without altering the internal structure during this transition. The chemical property is unaffected by a physical transition.
Anything in our environment undergoes changes. Physical or chemical changes may occur. All that has mass and consumes space is referred to as "matter." It has physical and chemical properties and is made up of small particles.
The method of tempering steel to shape a knife blade is an example of a physical change. The hardness, resilience, and ability to retain a sharp edge of a steel blank are all altered by constantly heating and hammering it.
The rearrangement of atoms occurs in several physical transitions, most notably in the forming of crystals. While certain chemical and physical modifications are permanent, reversibility is not a strict requirement for classification. As an indicator such as odour, colour shift, or the output of a gas can be used to identify chemical changes, both of these indicators can also be caused by physical change.

Note:
The rearrangement of atoms occurs in several physical transitions, most notably in the forming of crystals. While certain chemical and physical modifications are permanent, reversibility is not a strict requirement for classification. As an indicator such as odour, colour shift, or the output of a gas can be used to identify chemical changes, both of these indicators can also be caused by physical change.