Explain why the melting points of ionic compounds and molecular compounds differ?

Question

The melting points of ionic compounds and molecular compounds differ because....

-A tremendous amount of energy (heat transfer) is required to separate the tightly bound ions in solid ionic compounds (better known as melting).

-Since the attractive forces between covalent molecules are relatively weak, they are easy to separate.

I have the answers here, but I would like some help putting this all together, because I don’t get how to start answering from because.

Thanks in advance.

Answer 1

I would use something like this.
http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/bond2.html

Answer 2

When in a solid form, NaCl (salt) is a neutral compound. When dissolved in water the ions dissociate (break apart) to form Na+ and Cl-. How does this explain why salt can conduct electricity when dissolved but not in solid form? _______________________________________________