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Why Does Salt Melt Ice on Roads?

Why Does Salt Melt Ice on Roads?

为什么盐能让路面上的冰融化?

  1. Salt lowers the freezing point of water below zero degrees.
  2. Pure water freezes at 0°C, but saltwater freezes colder.
  3. When salt touches ice, it makes a briny liquid layer.
  4. This thin liquid breaks the ice’s solid structure gradually.
  5. The process works best above -10°C for common road salt.
  6. Cities use salt because it is cheap and easy to spread.
  7. Too much salt harms plants and corrodes car parts.
  8. Engineers test new eco-friendly ice-melting materials now.
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