If testing shows an element is a poor conductor of electricity, it is probably a(n)

An electrical insulator.
Insulator is something opposite to conductor, electricity cannot transfer through it easily. Therefore we can say a poor conductor is also a good insulator.
Examples of electrical insulators include plastic, wood, cloth etc. Because they are lack of free electrons that cannot transfer electricity fast enough.

False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other

Answer it was we, the the whole people, who formed the union. and we formed it, not to give the blessings of liberty, but to secure them: not to the half of ourselves and the half of our posterity, but to the whole people- women as well as men.