Here's how it works:
* Lowering the Freezing Point: Rock salt dissolves in water, creating a solution with a lower freezing point than pure water. This means that the salty water on the walkway won't freeze as easily, even when temperatures are below freezing.
* Melting Existing Ice: If ice is already present, the salt will dissolve a small amount of it, creating a salty solution. This solution has a lower freezing point, so the remaining ice melts.
Important Notes:
* Effectiveness: Rock salt is most effective when temperatures are above 20°F (-6.7°C). It becomes less effective at lower temperatures.
* Damage: Rock salt can damage concrete, plants, and pets. It's important to use it sparingly and to sweep up any excess after the ice has melted.
* Alternatives: There are other de-icing products available, such as calcium chloride or magnesium chloride, which are less damaging to the environment.
Let me know if you'd like to learn more about any of these aspects!
