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  • Chemical Reactions and Acids, Bases, and Salts Online Quiz
  • When hydrogen burns, what is oxygen's role?
Multiple choice

When hydrogen burns, what is oxygen's role?

  1. Catalyst

  2. Inhibitor

  3. Product

  4. Reactant

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

When hydrogen burns, it reacts with oxygen to form water. In this combustion chemical reaction, oxygen acts as a reactant consumed in the process.

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