Astudent records the mass of a piece of iron. the iron is then left outside until it rusts. what type of reaction occurs, and how does the mass of the object after rusting compare with its original mass?

A student records the mass of a piece of iron. The iron is then left outside until it rusts. The type of reaction that occurs is oxidation reaction. The mass of the object decreases after rusting compared with its original mass.

Variables,control,conclusion and finally scientific theory