* Melting Point: The melting point of a substance (like ice) is a fixed temperature at which it changes from solid to liquid. For ice, that's 0°C (32°F). No matter what you add to ice, it will only melt at that temperature.
* Sawdust and Insulation: Sawdust is actually a good insulator. It traps air, which slows down heat transfer. This means that if you have a block of ice with sawdust on top, the sawdust will act as a barrier and prevent the heat from the environment from reaching the ice as quickly.
* How Sawdust Helps: Sawdust helps melt ice faster indirectly. It provides a surface area for the ice to melt on. The sawdust absorbs some of the heat from the environment, and this heat is then transferred to the ice. This makes the ice melt faster because it's exposed to more heat. However, the sawdust itself doesn't change the melting point of the ice.
In short: Sawdust doesn't change the melting point of ice, but it speeds up the melting process by providing a surface area for heat transfer and acting as a barrier to insulate the ice.
