Question

when iron rusts and forms iron oxide, the iron oxide has more mass than the iron. which statement correctly explains this difference in mass? (1 point) the iron atoms in iron oxide have more mass than pure iron. there are more iron atoms in iron oxide than in pure iron. the oxygen atoms in iron oxide have more mass than the iron atoms in pure iron. iron oxide has oxygen atoms, and pure iron does not.

Explanation:

Iron oxide is formed when iron reacts with oxygen in the air. The additional oxygen atoms in iron - oxide contribute to its greater mass compared to pure iron. Pure iron only consists of iron atoms, while iron oxide has oxygen atoms in addition to iron atoms.

Answer:

The oxygen atoms in iron oxide have more mass than the iron atoms in pure iron.