Nonmetal

Imagine trying to hold a conversation in a crowded room where everyone is talking at once. Just as it's difficult for your words to reach the person you're speaking to amidst all the noise, a nonmetal struggles to pass heat or electricity efficiently. In this scenario, your voice is like heat or electricity, the crowded room represents the structure of a nonmetal, and the difficulty in communicating mirrors the poor conductivity of nonmetals.
Practice Version

Nonmetal: An element that is a poor conductor of heat and electricity. Nonmetal. Nonmetals are elements that usually have low electrical conductivity and are often gases or brittle solids at room temperature.