Why is sodium carbonate crystal weathering not a physical change?

Sodium carbonate crystal weathering: Na2CO3+H2O+CO2=2NaHCO3
Is chemical change
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After drying, white crystals appear on the surface, whether physical or chemical

Physical Properties
Salted vegetables in the process of salting will be added salt, drying, evaporation of water, sodium chloride salt crystallization.
Evaporative crystallization is a physical change

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