You have been given a sample of an unknown

substance. You find out that it does not

dissolve in water, has a very high melting

point and conducts electricity when molten.

The substance is probably

1. C8H18

2. an ionic compound

3. sodium chloride

4. a covalent compound

At first I thought it would be an ionic compound, but it says that it doesn't dissolve in water so im not too sure about it.

. an ionic compound

Explanation:

If it conducts electricity when molten, then it is an ionic compound. No covalent compound conducts electricity in molten state because their crystal lattice is not composed of ions. There are ionic solids which conduct electricity when molten but are insoluble in water such as alumina Al2O3. The solid is soluble in strong acid solutions.

it's filtration, but this is an assumption so my apologies if i got this