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)ResponsesIron 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.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.The iron atoms in iron oxide have more mass than pure iron.There are more iron atoms in iron oxide than in pure iron.

Answer 1

The correct statement that explains the difference in mass when iron rusts and forms iron oxide is: "Iron oxide has oxygen atoms, and pure iron does not."

When iron reacts with oxygen in the environment to form iron oxide (rust), the resulting compound includes additional oxygen atoms, which contributes to the increased mass of the iron oxide compared to the original pure iron.