the salt can be obtained by crystallization
the salt can be recovered by the evaporation of water
heat is not generated during mixing
the solution will not boil at 100oC
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Dissolving salt in water is considered a physical change because no new chemical substance is formed and the process is reversible. The key identifier of a physical change in this context is that the original components (salt and water) retain their chemical identities and can be separated by physical methods. Since evaporation removes the water as vapor and leaves behind the original salt crystals unchanged, it demonstrates that the identity of the salt was never lost
The selected answer is wrong:
The selected answer from the question is wrong, the right answer should be option B because common salt in water is a mixture which can be separated by physical means(evaporation), check Essential chemistry page 7, number 4. Thanks
the answer is wrong bcuz a physical change is somethin that can be seperated physically. evaporation is a physical separation technique. therefore the answer is B.
the answer is b cos even mixture can generate heat . Check for d characteristic of mixtures n compounds
