Denser materials are good conductors and less dense materials are poor conductors and better insulators. Is this statement true or false?

The statement is true because it reflects the general principle regarding the conductive properties of materials based on their density. Denser materials typically have a greater number of closely packed atoms, which allows for better conductivity, particularly in metals. In metals, the free movement of electrons facilitates the transfer of heat and electricity, making these denser materials good conductors.

On the other hand, less dense materials often have a structure that inhibits the flow of electrons and, consequently, heat. These materials tend to be more effective as insulators. For instance, materials like wood, plastic, and fiberglass are less dense and thus serve as excellent insulators because they do not easily conduct heat or electricity.

This understanding of conductivity in relation to density is a fundamental concept in materials science, especially relevant in fields such as construction, electronics, and thermal management.