It is also possible for substances to react with water producing ions, e.g., carbon dioxide gas dissolves in water to produce a solution which contains hydronium, carbonate, and hydrogen carbonate ions.
It is also possible for substances to react with water. This water is producing ions, e.g., carbon dioxide gas dissolves in water. This is to produce a solution. This solution contains hydronium. This solution contains carbonate. This solution contains hydrogen carbonate ions.