Humber Admissions Practice Test

What describes the properties of nonmetals?

1. Hard and shiny

2. Dull, brittle, and poor conductors

3. Malleable and ductile

4. High melting points and electrical conductivity

The correct answer is: Dull, brittle, and poor conductors

The answer is accurate because nonmetals are characterized by being dull in appearance, brittle in their solid state, and generally poor conductors of heat and electricity. This set of properties distinguishes nonmetals from metals, which tend to be shiny, hard, malleable, and good conductors. Specifically, when nonmetals exist as solid materials, they break or shatter easily rather than deforming, which reflects their brittle nature. In terms of conductivity, nonmetals such as sulfur and phosphorus do not allow electric current to flow efficiently, contrasting with the conductive properties of metals. Overall, the combination of being dull, brittle, and poor conductors accurately reflects the fundamental attributes of nonmetals.