Question

Rusting is a chemical reaction between iron and oxygen. Over time, the mass of a rusting nail
gradually increases. Does this mean that this chemical reaction does not obey the law of
conservation of mass? Explain.

Answer 1

Answer: Yes this chemical reaction obeys the laws of physics. Its very simple, let me explain.

Explanation:

When Iron(Fe) oxidizes it gains three oxygen atoms so it reacts to form Fe2O3 so it becomes bigger or explands. Its also sometimes called "oxide jacking".