Acid doesn’t eat through everything else either. there are other materials that acid doesn’t dissolve. like plastics for example.
also, there’s no such thing as plain “acid”. which chemical substance specifically are you talking about?
because hydrofluoric acid does in fact dissolve glass.
meanwhile something like citric acid is too weak to dissolve metals and most other materials.
acidic substances react with different materials depending on the strength of the acid. different acids will react with materials in different ways.
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