Why does adding salt to water make the freezing point lower chemistry reasoning

Question

abb0t · Answer

Why do you think this occurs? Think about the intermolecular forces.

anonymous · Answer

Well when water is freezing the molecules come and go at a constant rate. When salt is involved it blocks the way for the molecules causing them to come and go at a much slower rate.

abb0t · Answer

What do you mean "come and go"? Where are they going? 
I think I know what you mean, but I just want to make sure that you're clear by what YOU mean. That way if you're asked this an on exam, you can avoid giving unclear answer.

anonymous · Answer

If the ice is at 32oF, melting point of water, salt will not make it colder. As it melts, the mix will be at 32oF.

If ice is below 32, then salt, by lowering the melting point,
will produce a mix of ice and water at colder than 32oF.