Why Do Things Dissolve in Water?

Answer

Some substances dissolve in water because water is a polar molecule, with one positively charged end, and the other negatively charged. It is these charges that interact with ionic bonds in substances like sugar, after water molecules have surround the charged particles in the sugar with oppositely charged ends of water molecules. The effective charges on the sugar ions are reduced, so they no longer attract one another to the extent that they did before.
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