Question

Many cities have to deal with icy roads during the winter. To fix the problem, city workers pour salt onto the roads. Which rule about the physical world are they using?
A. Salt helps ice melt at colder temperatures.
B. Many cities use salt to deice roads.
C. Damage to cars resulting from salted roads has cost people billions of dollars.
D. Sand can also be used to treat icy roads.

Answer 1

The rule about the physical worldthe city workers are using in the situation given above is:

A. Salt helps ice melt at colder temperatures.

In fact according to experiments done, salt can lower the freezing point and water's melting point.

Answer 2

Answer: answer A

Explanation:

Because salt make ice to melt