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碳酸鈉晶體風化:Na2CO3 + H2O + CO2=2 NaHCO3 為化學變化 懂了嗎?
物理性質 鹹菜在醃制過程中會加入食鹽,曬乾時,水分蒸發,食鹽中的氯化鈉結晶析出. 蒸發結晶過程是物理變化
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