Properties of Metals and Nonmetals

The video tutorial explains the periodic table's division into four main sections: main group metals, nonmetals, metalloids, and transition metals. It describes the properties of metallic elements, such as malleability, luster, and conductivity, and contrasts them with nonmetallic elements, which vary more in properties and can be solids, liquids, or gases. Metalloids exhibit intermediate properties between metals and nonmetals, with silicon as an example. The tutorial concludes with a summary of these element types and their characteristics.

Which of the following sections is NOT part of the periodic table's main divisions?

• Nonmetals

• Main group metals

• Noble gases

• Metalloids

What is a common property of metallic elements?

• They are brittle

• They are poor conductors of electricity

• They have a shiny appearance

• They gain electrons to form anions

Which of the following is NOT a property of metals?

• Poor heat conductivity

• High luster

• Forming cations

• Malleability

How do nonmetallic elements generally differ from metallic elements?

• They are good conductors of heat

• They tend to lose electrons

• They can be gases, liquids, or solids at room temperature

• They are always solid at room temperature

What is a typical behavior of nonmetallic elements in terms of electron interaction?

• They lose electrons to form cations

• They do not interact with electrons

• They gain electrons to form anions

• They share electrons equally

Which element is an example of a metalloid with variable conductivity?

• Carbon

• Oxygen

• Silicon

• Iron

What property do metalloids exhibit?

• Properties identical to metals

• Properties identical to nonmetals

• No distinct properties

• Intermediate properties between metals and nonmetals

At what temperature does silicon show increased conductivity?

• Room temperature

• High temperature

• Low temperature

• It does not conduct electricity