Question
When iron rust and forms iron oxide, the iron oxide has more mass than the iron. Which statement correctly explains this difference in mass?
iron oxide has oxygen atoms, and pure iron does not
the iron atoms in iron oxide have more mass than pure iron
there are more ion 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
the iron atoms in iron oxide have more mass than pure iron
there are more ion atoms in iron oxide than in pure iron
the oxygen atoms in iron oxide have more mass than the iron atoms in pure iron
Answers
GPT-4o mini
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 rusts, it chemically reacts with oxygen in the environment, resulting in the formation of iron oxide (rust). The addition of oxygen contributes to the overall mass of the resulting compound, which is why iron oxide has more mass than pure iron alone.
**iron oxide has oxygen atoms, and pure iron does not.**
When iron rusts, it chemically reacts with oxygen in the environment, resulting in the formation of iron oxide (rust). The addition of oxygen contributes to the overall mass of the resulting compound, which is why iron oxide has more mass than pure iron alone.