Metals, Nonmetals, Metalloids

Which of the following is a metal?

• Oxygen

• Iron

• Helium

• Chlorine

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TEKS.SCI.6.6C

Identify the element that is a nonmetal.

• Sodium

• Carbon

• Aluminum

• Magnesium

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TEKS.SCI.6.6C

Which element is classified as a metalloid?

• Silicon

• Neon

• Gold

• Silver

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TEKS.SCI.6.6C

What is a common property of metals?

• Brittle

• Poor conductor of electricity

• Malleable

• Non-reactive

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TEKS.SCI.6.6C

Explain why metalloids are important in modern technology.

• They are used as insulators.

• They have properties of both metals and nonmetals, making them useful in semiconductors.

• They are abundant and cheap.

• They are non-reactive and stable.

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TEKS.SCI.6.6C

How do the physical properties of rare Earth elements contribute to their use in electronics?

• They are lightweight and non-conductive.

• They have magnetic properties and high electrical conductivity.

• They are transparent and flexible.

• They are brittle and non-reactive.

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TEKS.SCI.6.6C

Compare the properties of metals and nonmetals and explain how these properties determine their uses in everyday life.

• Metals are generally brittle, while nonmetals are malleable, making metals suitable for construction.

• Metals are good conductors of electricity, while nonmetals are insulators, making metals suitable for electrical wiring.

• Both metals and nonmetals are good conductors of heat, making them suitable for cooking utensils.

• Nonmetals are shiny and ductile, making them suitable for jewelry.

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TEKS.SCI.6.6C

Which of the following elements is a rare Earth element?

• Helium

• Neodymium

• Carbon

• Sulfur

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TEKS.SCI.6.6C

Identify the element that is most likely to be used in the production of computer chips.

• Silicon

• Iron

• Copper

• Lead

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TEKS.SCI.6.6C

Discuss the role of metals in the construction industry and provide examples.

• Metals are used for their insulating properties, such as in fiberglass.

• Metals are used for their strength and durability, such as in steel beams and aluminum frames.

• Metals are used for their transparency, such as in glass windows.

• Metals are used for their flexibility, such as in rubber seals.

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TEKS.SCI.6.6C