Question

explain one major difference between physical and chemical changes in 20 to 30 words​

Answer 1

Answer:

The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.

Answer 2

➭ AnSwer :-

⟹ Chemical change :-

• A chemical change is a permanent change.

⟶ Examples :-

• A few examples of chemical change are digestion of food, burning of coal, rusting, etc.

⟹ Physical change :-

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

⟶ Examples :-

• Some examples of physical change are freezing of water, melting of wax, boiling of water, etc.