Chemical reactions are of course chemical changes.
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.
chemical
It's a chemical reaction
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