If you mix something and it actually mix forming a new compound either solid or fluid, then the reaction is chemical. this can be as easy as burning a sheet of paper. The reaction is chemical and triggered by heat. The product you get is compositionwise different to the original product.
If having a glass of water and a glass of salt and you then mix the sand with the salt, then this would be a physical reaction. The salt and water mix, but does not actually form a new compound, only a mixture of the two.
Another physical reaction is melting of ice (The water is still water even though it is a solid as in ice.)
a physical reaction for the chemical structure is not changing.
What do u mean by chemical or physical reaction... Please give me an answer so i can give you the answer.
Water is not a reaction at all. If you mean to ask if a state change in water is chemical or physical, it is physical.
It's a chemical reaction
chemical
It is a physical property not a reaction
Scientists make a distinction: physical absorption (without chemical reaction) and chemical absorption (involving a chemical reaction).
a physical reaction you can see and a chemical is the molecules changing inside the object
Sulphurous acid is not a reaction (chemical or physical); the sulphurous acid (H2SO3) is a chemical compound.
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chemical
well the chemical reaction is cooking not physical