List three properties of metals and two properties of nonmetals. Describe the behavior of metalloids relative to the behaviors of metals and nonmetals.

Metals are elements that have some common characteristics. Here are three properties of metals: 1. Electrical Conductivity: Metals are good conductors of electricity. They have free electrons that can move easily, allowing an electric current to flow through the metal. 2. Thermal Conductivity: Metals are excellent conductors of heat due to the free-moving electrons, which can easily transfer energy throughout the metal and facilitate the flow of heat. 3. Malleability and Ductility: Metals are generally very malleable, meaning they can be hammered or rolled into thin sheets without breaking. They are also ductile, meaning they can be drawn into wires without breaking. This is because of the metallic bonding in their crystal structure.

Nonmetals have different characteristics compared to metals. Here are two properties of nonmetals: 1. Poor Conduction: Nonmetals are poor conductors of heat and electricity. This is due to their electron structure, which does not allow for the free movement of electrons, like in metals. 2. Brittle: Nonmetals are generally brittle rather than malleable or ductile. This is because their atoms are held together by covalent bonds, which make their structures more rigid and less flexible than metallic structures.

Metalloids are elements that have properties in between those of metals and nonmetals. They typically exhibit both metallic and nonmetallic behaviors depending on the environment and conditions they are in. 1. Electrical Conductivity: Metalloids generally have intermediate electrical conductivity. Their ability to conduct electricity can vary depending on temperature, pressure, or other factors. For example, silicon is a poor electrical conductor at room temperature but becomes more conductive at higher temperatures. 2. Thermal Conductivity: Metalloids have intermediate thermal conductivity properties, meaning they are better conductors of heat than nonmetals but not as good as metals. 3. Appearance and Structure: Metalloids can be shiny like metals or dull like nonmetals. They may be brittle or malleable, depending on their individual properties and crystal structures. In summary, metalloids exhibit a combination of metallic and nonmetallic behaviors, which makes them unique and useful in various applications, such as semiconductors in electronics.