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Originally, oxidation described the addition of which element?

AOxygen
BHydrogen
CNitrogen
DChlorine
Answer & Solution
Correct answer: A. Oxygen
1. The word oxidation comes from the element involved. 2. Early chemists watched substances combine with air. 3. So oxidation first meant the addition of oxygen. _Source: syllabus Chemistry Part II, Unit 8, Redox Reactions._
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