When magnesium burns in cl2 , it forms magnesium chloride. which element is reduced?

In an oxidation-reduction reaction, oxidation is what happens when a reactant

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles