Question
Balance of Atoms Quick Check1 of 51 of 5 ItemsQuestionWhen 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)ResponsesThe 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.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 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.Skip to navigation
Answers
GPT-4o mini
The correct statement that explains the difference in mass when iron rusts to form iron oxide is:
"Iron oxide has oxygen atoms, and pure iron does not."
When iron (Fe) reacts with oxygen (O) from the environment, it forms iron oxide (Fe₂O₃), which includes both iron and oxygen atoms. The added mass from the oxygen contributes to the overall mass of the iron oxide compared to pure iron alone.
"Iron oxide has oxygen atoms, and pure iron does not."
When iron (Fe) reacts with oxygen (O) from the environment, it forms iron oxide (Fe₂O₃), which includes both iron and oxygen atoms. The added mass from the oxygen contributes to the overall mass of the iron oxide compared to pure iron alone.