日常生活中的科学
Why does salt dissolve in water?
Table salt is not made of isolated NaCl molecules in the solid; it forms an extended ionic lattice.
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简短答案
Table salt is not made of isolated NaCl molecules in the solid; it forms an extended ionic lattice.
真正发生了什么？
Na loses one electron to form Na+; Cl gains one to form Cl−, while their proton counts stay unchanged.
A polar H–F bond reflects fluorine's much stronger attraction for bonding electrons.
一个有用的直观图景
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Table salt separates into ions in water because polar water molecules can stabilize charged particles. The crystal does not simply 'vanish': its ions become dispersed through the liquid.