
Review of Periodic Table 2022
Authored by Wendy Ross
Chemistry
9th - 12th Grade

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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which of the following elements have similar chemical and physical properties?
lithium & beryllium
calcium & barium
aluminum & sulfur
zirconium & tungsten
Answer explanation
Elements in the same group have similar chemical properties because they have the same number of valence electrons (and do the same thing to obey the octet rule).
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which family is the most reactive nonmetal family?
alkali metals
alkaline earth metals
halogens
noble gases
oxygen family
Answer explanation
Nonmetals are on the right side of the metalloids. Halogens are the most reactive because they only have to gain one electron in order to obey the octet rule.
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which family is the most reactive metal family?
alkali metals
alkaline earth metals
halogens
noble gases
oxygen family
Answer explanation
Metals are on the left side of the metalloids. Halogens are the most reactive because they only have to lose one electron in order to obey the octet rule.
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which family is known as inert?
alkali metals
alkaline earth metals
halogens
noble gases
oxygen family
Answer explanation
Since they already have a full octet of valence electrons they have no reason to react
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
What is the oxidation number of elements in the nitrogen family?
+5 because 5 electrons are gained
-5 because 5 electrons are gained
+3 because 3 electrons are gained
-3 because 3 electrons are gained
Answer explanation
Since these elements have 5 valence electrons, they have to gain 3 more in order to have a full octet. Since they have more electrons than protons, they form anions with a negative charge.
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which of the following is a chemical property of a metal?
brittle
reacts with acid
lustrous
does not react with CuCl2
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which of the following is a reason that the nuclear pull gets stronger from left to right across a period?
There are more protons in the nucleus pulling on valence electrons that are in the same energy level.
There are more energy levels in the atom.
There are more inner electrons in the atom.
There is decreased nuclear shielding.
Answer explanation
Elements in the same period have the same number of energy levels, inner electrons, and amount of shielding since their valence electrons are in the same principal energy level.
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