discuss why the dissolving of salt inwater is a physical change
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because no any chemical change takes place when dissolved.
Hence, dissolution of salt and water is physical change.
Hence, dissolution of salt and water is physical change.
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It is chemical reaction. you are going from a balanced charged compound to two compounds with charge.
If it was a physical change you would never have ppt from solutions.
eg add Ba(NO3)2 + CuSO4 you get a ppt of BaSO4 this is not the same compound therefore the compound must dissasociate for this to happen.
Every time salt dissolves in water heat is needed (or released). Now a reaction can be exothermic (burn you) or endothermic (freeze you). Of course a physical change will do this. BUT they will not do it if both compounds are at the same temperature.
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