Metalloids — Unit test

Question 1

Which statement describes the location of most metalloids on the periodic table?

Revolt · Accepted Answer

The metalloids are located below nonmetals and above metals within a group.

Question 2

Calcium, magnesium, and strontium are near each other on the periodic table and have some characteristics in common, but they differ in chemical reactivity. Which lists these metals in order from most reactive to least reactive?

Revolt · Accepted Answer

strontium, calcium, magnesium

Question 3

Where are alkaline earth metals found on the periodic table?

Revolt · Accepted Answer

Group 2

Question 4

What best describes the states of nonmetals when they are at room temperature?

Revolt · Accepted Answer

Most nonmetals are gaseous, but some are liquid or solid.

Question 5

Which metal is most likely to form more than one kind of positively charged ion?

Revolt · Accepted Answer

nickel (Ni)

Question 6

The model below shows an atom of an element.

Revolt · Accepted Answer

8

Question 7

An atom of the element chromium has an atomic number of 24 and a mass number of 52. How many electrons are in an uncharged atom of chromium?

Revolt · Accepted Answer

24

Question 8

Which important change in electronic devices, such as televisions and computers, is a result of the use of metalloids as semiconductors?

Revolt · Accepted Answer

Electronic devices have become smaller.

Question 9

Which element is most likely to carry electric current easily?

Revolt · Accepted Answer

tin (Sn)

Question 10

These models show the electron structures of two different nonmetal elements.

Revolt · Accepted Answer

Element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

Metalloids — Unit test Answers

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