Question

Properties of non-metals include (check all that apply):

A. High electrical conductivity
B. Brittle in solid state
C. Typically dull appearance
D. Good conductors of heat

Answer 1

Non-metals are typically brittle in solid state and have a dull appearance. They are not characterized by high electrical conductivity or being good conductors of heat, which are properties of metals, not non-metals.

Step-by-step explanation:

The question is concerned with the properties of non-metals. Non-metals have characteristic properties that are generally opposite to those of metals. When considering the options given:

• B. Brittle in solid state: This is true for non-metals. In their solid form, non-metals tend to be brittle and will shatter or break when subjected to stress.
• C. Typically dull appearance: Non-metals do not have the lustrous, shiny appearance that metals possess. They usually have a duller appearance.

However, the other properties mentioned, such as A. High electrical conductivity and D. Good conductors of heat, are not typical of non-metals. Instead, non-metals are poor conductors of heat and electricity. Therefore, the correct properties of non-metals that apply here are options B and C.