Yes, that's correct! Materials that do not conduct electrical charges at all are called insulators.

Here's a breakdown:

* Conductors: Materials that allow electric charges to flow freely through them. Examples include metals like copper and silver.

* Insulators: Materials that resist the flow of electric charges. Examples include rubber, glass, and plastic.

The reason insulators resist the flow of charge is that their electrons are tightly bound to their atoms and don't easily move around.