This list is a mix of chemical substances (e.g. water), categories of substances (e.g. salt) and elements (e.g. carbon), so it doesn't really make sense. It wou

This list is a mix of chemical substances (e.g. water), categories of substances (e.g. salt) and elements (e.g. carbon), so it doesn't really make sense. It would make more sense to stick to elements, e.g. list hydrogen and oxygen instead of water. Also, ammonia is very toxic and only exists in trace amounts in the body. Apparently it's a quote from the manga series Fullmetal alchemist.