Multiple choice

When oxidation occurs, it forms...

  1. Oxigen

  2. Mold

  3. Rust

  4. Ferric

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

Oxidation of iron in the presence of oxygen and moisture forms rust, which is hydrated iron(III) oxide. Mold is a biological organism, oxygen is a reactant rather than a product, and ferric refers to an oxidation state of iron rather than a compound.