Final answer:
Resistance is the term used to describe the electrical property that resists or blocks the flow of electricity, and materials that inhibit the flow of electric charge are called insulators.
Step-by-step explanation:
Something that resists or blocks the flow of electricity is called resistance. Materials that do not allow charges to move through them, such as glass, rubber, and dry table salt, are known as insulators. These materials have electrons and ions that are tightly bound in their structure and cannot move freely. In contrast, materials that allow electricity to pass through easily, such as metals like copper and gold, have low resistance and are called conductors. The concept of resistance is crucial when dealing with electric circuits, as it determines how much electric current can flow for a given voltage, following Ohm's Law. Understanding resistance and its impact on the flow of electricity is essential for designing and troubleshooting electrical circuits.