Metalloids

Question 1

Which elements are metalloids? Check all that apply.

Revolt · Accepted Answer

boron; silicon; tellurium

Question 2

For each property listed, identify the type of element it describes. Very good electrical conductivity: Amphoteric, able to form acidic OR basic compounds: Gaseous at room temperature: Solid at room temperature: Brittle:

Revolt · Accepted Answer

Selection 1: metals only; Selection 2: metalloids only; Selection 3: nonmetals only; Selection 4: metals and metalloids; Selection 5: metalloids and nonmetals

Question 3

Fatima is designing an advanced graphics card for a next-generation video game system. She needs to be able to precisely control the conductivity of the electronic components. For this purpose, she should use materials that are . An element that is likely to have this property is .

Revolt · Accepted Answer

semiconducting; Selection 1: semiconducting; Selection 2: tellurium

Question 4

Question 21

Revolt · Accepted Answer

tellurium

Question 5

Metalloids are useful as semiconductors in modern electronics, like smartphones. Which feature of a smartphone is made possible by metalloids?

Revolt · Accepted Answer

touchscreen

Question 6

Which elements can form acidic compounds? Check all that apply.

Revolt · Accepted Answer

sulfur; arsenic; selenium; silicon; antimony

Question 7

The position of metalloids on the periodic table is generally found along a diagonal line betweenand nonmetals. Metalloids typically have a appearance, which can resemble that of metals, but they are generally more brittle.

Revolt · Accepted Answer

Selection 1: metals; Selection 2: metallic

Question 8

What did you include in your response? Check all that apply.

Revolt · Accepted Answer

All elements in group 13 have 3 valence electrons.; Losing electrons during chemical reactions causes metallic behavior in elements.; It is easier to lose 3 electrons than it is to gain 5, so most group 13 elements behave as metals.; Having fewer electron shells makes it easier to gain electrons.; Boron has so few electron shells that it is just as easy for it to lose electrons as it is to gain electrons, so it behaves like a metalloid.

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