Explanation:

* Salt (Sodium Chloride): Salt lowers the freezing point of water. When salt is added to ice, it dissolves in the thin layer of water that forms on the surface. This solution has a lower freezing point than pure water, so the ice melts even at temperatures below 0°C (32°F).

* Hydrogen Peroxide: Hydrogen peroxide is a powerful oxidizing agent but does not have the same effect on freezing point as salt. While it can react with ice, it does not significantly lower the freezing point. In fact, hydrogen peroxide may even slightly raise the freezing point due to its molecular structure.

Conclusion:

Salt is more effective than hydrogen peroxide in melting ice due to its ability to lower the freezing point of water.