Understanding Non-Metals: Properties and Characteristics

Which of the following is a correct statement about the electrical conductivity of non-metals?

• Non-metals are excellent conductors of electricity.

• Non-metals are poor conductors of electricity.

• Non-metals conduct electricity better than metals.

• Non-metals are used as electrical conductors.

What is the typical state of metals at room temperature, and which metal is an exception?

• Metals are solids at room temperature; mercury is a gas.

• Metals are solids at room temperature; mercury is a liquid.

• Metals are liquids at room temperature; mercury is a gas.

• Metals are gases at room temperature; mercury is a solid.

How do the melting and boiling points of non-metals generally compare to those of metals?

• Non-metals have lower melting and boiling points than metals.

• Non-metals have variable melting and boiling points compared to metals.

• Non-metals have the same melting and boiling points as metals.

• Non-metals have higher melting and boiling points than metals.

What does it mean for a material to be brittle?

• It can be easily compressed without breaking.

• It breaks or shatters easily upon impact.

• It can be easily stretched without breaking.

• It is resistant to breaking under impact.

Which of the following materials is NOT typically considered brittle?

• Glass

• Ceramics

• Wood fibers

• Plastic