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) 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. the iron atoms in iron oxide have more mass than pure iron. iron oxide has oxygen atoms, and pure iron does not.

Explanation:

Rusting is a chemical reaction where iron reacts with oxygen in the air to form iron oxide. The increase in mass is due to the addition of oxygen atoms from the air to the iron. Pure iron consists only of iron atoms, while iron oxide has both iron and oxygen atoms.

Answer:

Iron oxide has oxygen atoms, and pure iron does not.