Question

What are the physical and chemical changes? Give examples. ​

Answer 1

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A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.  

Melting and burning of candle wax is an example of both physical and chemical changes. Answer: Burning of wood is a example of both physical and chemical change. When wood is burnt the moisture present in it turns to vapour ,it is a physical change while it burns and generate CO2 is a chemical change.

Answer 2

Answer:

physical change:- A change to form but not chemical identity. example:- freezing of water, etc.

chemical change:- A change to form chemical reaction. example:- burning of paper, etc.

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