Acids are chemicals that can dissolve many things because they release hydrogen ions when they are dissolved in water. These hydrogen ions can then react with other substances, causing them to break apart or dissolve. For example, when hydrochloric acid (HCl) is added to water, it dissolves to form hydrogen ions (H+) and chloride ions (Cl-). The hydrogen ions can then react with other substances, such as metals, to cause them to dissolve.
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