6.6.C - Metals, Nonmetals, Metalloid and Rare Earth Metals Quiz

Which of the following is a property that distinguishes metals from nonmetals?

• Metals are poor conductors of electricity.

• Metals are malleable and ductile.

• Metals are usually brittle.

• Metals do not have luster.

Which element is classified as a metalloid?

• Oxygen

• Silicon

• Gold

• Sodium

Which of the following is a rare earth metal?

• Iron

• Neodymium

• Carbon

• Sulfur

Which statement best describes nonmetals?

• They are good conductors of heat and electricity.

• They are usually shiny and hard.

• They are often gases or brittle solids at room temperature.

• They are always magnetic.

Which of the following elements is most likely to be used in making computer chips due to its semiconducting properties?

• Aluminum

• Silicon

• Iron

• Helium

Tags

NGSS.HS-PS2-6

Which property is shared by most rare earth metals?

• They are highly reactive with water.

• They are often used in strong magnets and electronics.

• They are gases at room temperature.

• They are found in large, pure deposits.

Which of the following is NOT a typical property of metals?

• High electrical conductivity

• High melting point

• Brittle when solid

• Shiny appearance

Which element is a nonmetal that is essential for life and is found in all living things?

• Carbon

• Magnesium

• Silver

• Neon

A student is given four unknown elements and must classify each as a metal, metalloid, or nonmetal. The student observes the following properties: - Element 1: Shiny, conducts electricity, malleable - Element 2: Dull, does not conduct electricity, brittle - Element 3: Shiny, brittle, semiconducts electricity - Element 4: Gas at room temperature Which element is most likely a metalloid? Explain your reasoning.

• Element 1, because it is shiny and conducts electricity.

• Element 2, because it is dull and brittle.

• Element 3, because it is shiny, brittle, and semiconducts electricity.

• Element 4, because it is a gas.

Imagine you are designing a device that needs a material to conduct electricity but not heat very well. Which type of element would you consider using, and why?

• Metal, because metals conduct both heat and electricity well.

• Nonmetal, because nonmetals conduct electricity but not heat.

• Metalloid, because metalloids can conduct electricity but not as well as metals, and they do not conduct heat as well as metals.

• Rare earth metal, because they are always insulators.

Tags

NGSS.MS-PS2-3