DR is the correct answer
hope this helps
The states in which water occur in are ice liquid and gas
4Fe + 3O2 -> 2 (Fe2O3)
Both sides have 4Fe and 6O.
Answer:
The second choice: physical change because even though gas formation was observed, the water was undergoing a state change, which means that its original properties are preserved
(WAS ALREADY ANSWERED PREVIOUSLY)