1. AP Chemistry Practice Test

AP Chemistry Multiple Choice Practice Test

Question 1 of 3
46% Get this Question Right
Aluminum reacts with oxygen to form aluminum oxide. Which of the reactions below is correct and properly balanced?
3Al(s) + O(g) -> Al3O2(s)
2Al(s) + O(g) -> 2AlO(s)
Al(s) + O(g) -> AlO(s)
4Al(s) + 3O(g) -> 2Al2O3(s)
4Al(s) + O(g) -> 2Al2O(s)