Biology, asked by akhand5163, 1 year ago

How to differentiate between physical and chemical and biology in hindi?

Answers

Answered by Mukul1742
1
There are several differences between aphysical 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.
Answered by stanyachowdary
0

Meaning: Physical change refers to a change in which the molecules are rearranged but their internal composition remains same.

Chemical Change is a process in which the substance transforms into a new substance, having different chemical composition.

Example: Tearing of paper, melting/freezing of water, cutting of trees, etc.

Burning of wood/trees/paper, rusting of iron, setting of curd, etc.

Nature: Reversible

Irreversible

Original matter: Can be recovered

Cannot be recovered

Involves Change in physical properties of the substance, i.e. shape, size, color etc.

Change in chemical properties and composition of the substance.

Product Formation: No new product is formed.

New product is formed.

Energy Absorption and evolution of energy do not take place.

Absorption and evolution of energy take place, during reaction.


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