When iron rusts and forms iron oxide, the iron oxide has more mass than the iron. Which statement correctly explains this observation?(1 point)
There are more iron atoms in iron oxide than in pure iron.
There are more iron atoms in iron oxide than in pure iron.
The iron atoms in iron oxide have more mass than pure iron.
The iron atoms in iron oxide have more mass than pure iron.
Iron oxide has oxygen atoms, and pure iron does not.
Iron oxide has oxygen atoms, and pure iron does not.
The oxygen atoms in iron oxide have more mass than the iron atoms in pure iron.