What substances make up water?

What substances make up an iron pot?

What are some substances that a pizza make up

A water molecule consists of three atoms; an oxygen atom and two hydrogen atoms, which are bond together like little magnets.

An iron pot is made up of only one substance, iron. Iron is an element classified as a transition metal

Iron. Elementsare pure substances that are made up of one kind of atom. Pizza is not an element because it is a mixture of many substances. Water is a pure substance, but it contains two kindsof atom: oxygen and hydrogen.