Quiz on Conductors

Elements that are generally good conductors of heat and electricity are _______. Elements that are generally poor conductors of heat and electricity are _______. Elements that are average conductors of heat and electricity are ___________. Which terms, in order of appearance, best complete the sentences?

• A. nonmetals; metals; metalloids

• B. metals; metalloids; nonmetals

• C. metals; nonmetals; metalloids

• D. metalloids; nonmetals; metals

A chemist studies the elements in the image. The chemist makes the following observations. What is the most likely classification of Element X and Element Y?

• Element X and Element Y are both metals.

• Element X and Element Y are both metalloids.

• Element X is a metal, and Element Y is a metalloid.

• Element X is a metalloid, and Element Y is a metal.

Use the diagram to answer the next two questions.

All the known elements are listed in the periodic table. A chemist has a sample of an element. The chemist makes the following observations of the element: - Solid - Malleable - Shiny - High electrical conductivity - High thermal conductivity - Gray color Which type of element could the chemist be studying?

• The element could be Ag because Ag is a metal.

• The element could be Sn because Sn is a metalloid.

• The element could be Ge because Ge is a metalloid.

• The element could be Ar because Ar is a nonmetal.

A chemist is studying the element sulfur (S). She looks at the location of sulfur in the periodic table to determine its physical properties. Which describes sulfur based on its location in the periodic table? Select all correct answers.

• Sulfur has a bright luster.

• Sulfur is a good conductor of electricity.

• Sulfur is a nonmetal.

• Sulfur does not have luster.

• Sulfur is a poor conductor of electricity.

Which of the following describes the three kinds of elements and their general areas in the periodic table, along with their electrical conductivity?

• Metals, nonmetals, and metalloids; metals are found on the left side and center, nonmetals on the right side, and metalloids along the zigzag line; metals have high conductivity, nonmetals have low conductivity, and metalloids have intermediate conductivity.

• Metals, nonmetals, and gases; metals are found on the left side, nonmetals on the right side, and gases in the center; metals have high conductivity, nonmetals have low conductivity, and gases have no conductivity.

• Metals, liquids, and gases; metals are found on the left side, liquids in the center, and gases on the right side; metals have high conductivity, liquids have moderate conductivity, and gases have low conductivity.

• Solids, liquids, and gases; solids are found on the left side, liquids in the center, and gases on the right side; solids have high conductivity, liquids have moderate conductivity, and gases have low conductivity.

A circuit in a heater needs a material that is a good conductor of electricity. A circuit in an electronic device needs a material that does not conduct electricity too well or too poorly. Identify whether metals, nonmetals, or metalloids should be used in the heater and which should be used in the electronic device. Explain your choices.

• Metals should be used in the heater, and metalloids should be used in the electronic device.

• Nonmetals should be used in the heater, and metals should be used in the electronic device.

• Metalloids should be used in the heater, and nonmetals should be used in the electronic device.

• Metals should be used in the heater, and nonmetals should be used in the electronic device.