Answer:
It forms a barrier that prevents corrosive substances from reaching the underlying steel or iron. The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc. The zinc protects its base metal by corroding before iron.
Explanation:
11. D
12.C
13. For 13 i would say B but not so sure
14. A
Answer:
exothermic
Explanation:
because heat will be released
An oxidizing agent is a substance that oxidized the substance that oxidizes the substance it is reacting with and it is itself reduced.