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To put it simply, the solid is pulled apart by the liquid into its simplest form - molecules or ions. These mix up with the particles of the solvent. For example, when dissolving sugar into water, the sugar crystals "break apart" one molecule at a time. We see this as the sugar crystals shrinking and then disappearing. In fact, they have not disappeared at all - they're just too small to see. In the case of an ionic compound, like salt, the ions are pulled apart by the liquid and float freely in the liquid. Since ions are charged particles, they allow the liquid to conduct electricity.

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8y ago

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