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科学素养与生活应用·英语30篇(3)

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Why Salt Melts Ice on Roads

Why Salt Melts Ice on Roads

为什么盐能融化道路上的冰

  1. Salt lowers the freezing point of water.
  2. Pure water freezes at 0°C, but saltwater freezes lower.
  3. When salt touches ice, it makes liquid brine.
  4. This brine spreads and melts more ice around it.
  5. Road crews spread salt before snow to prevent icing.
  6. Too much salt can harm plants and soil nearby.
  7. Sand is sometimes used instead for traction.
  8. Salt works best above -10°C.
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