Question

tan example of a material whose atoms strongly hold on to electrons?

Answer 1

Atoms hold electrons? You ought to read this http://en.wikipedia.org/wiki/Atom

Answer 2

Well, if even if the language isn't precise, certain materials have a higher or lower propensity to allow electrons to be free and move. Materials that allow a great deal of such movement are called conductors; those that do not are used as insulators.

So to answer your question, what is an example of a good insulator?

Answer 3

I didnt think it could be this straightforward.