Question

differentiate between physical and chemical change​

Answer 1

Answer:

In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. The distinction between physical and chemical change is not clear cut.

A chemical change is a permanent change. A Physical change affects only physical properties i.e. shape, size, etc. ... Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.

Explanation:

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Answer 2

Answer:

Physical change-When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.

Physical change is a temporary change.

A Physical change affects only physical properties e.g. shape, size, etc.

Chemical change-When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances.

A chemical change is a permanent change.

Chemical change both physical and chemical properties of the substance including its composition.

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