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Chemistry Final 3 Of 3
Test Description: Chem final
Instructions: Answer all questions to get your test result.
1) Most elements are
A
semiconductors
B
nonmetals
C
metals
D
metalloids
2) How do you know that potassium, an alkali metal, is highly reactive?
A
it conducts heat
B
it has one valence electron
C
it conducts electricity
D
it is a soft and shiny metal
3) elements that share properties of both metals and nonmetals are called?
A
Periods
B
Valences
C
Ions
D
Semiconductors/metalloids
4) Which statement about alkali metals is correct?
A
They are located in the left most column of the periodic table
B
form negative ions with 1- charge
C
are usually gases
D
they are extremely nonreactive
5) Neon is used for filling neon signs. Like other noble elements it has a full octet of electrons which makes the gas
A
freeze at room temperature
B
react with other gases in the air
C
unlikely to combine with other elements
D
solidify at standard pressure and temperature
6) Which is not a family of the periodic table?
A
halogens
B
alkaline-earth metals
C
anions
D
noble gases
7) Which of the rules discussed relates to the spin of the electron in an orbital?
A
Pauli Exclusion
B
Hund's Rule
C
Aufbau Principle
8) Reactive elements of group 17 that are poor conductors
A
transition metals
B
Alkaline earth metals
C
noble gases
D
halogens
9) Highly reactive elements that belong to Group 1
A
halogens
B
noble gases
C
alkali metals
D
metalloids
10) Elements that belong to groups 3-12 and are somewhat reactive
A
transition metals
B
alkaline earth metals
C
alkali metals
D
metalloids
11) Group 2 elements that have two valence electrons
A
alkaline earth metals
B
halogens
C
noble gases
D
transition metals
12) What is the Hund's rule?
A
electrons will enter empty orbitals of the same energy level before pairing up in an orbital with an electron already preset
B
the energy level of an electron is dependent on the shell
C
electrons fill a single orbital before moving to an empty orbital
D
two electrons in the same orbital must have separate spins
13) According to the Aufbau Principle
A
an orbital may be occupied by only 2 electrons
B
electrons in the same orbital must have opposite spins
C
electrons enter orbitals of highest energy first
D
electrons enter orbitals of lowest energy first
14) Would you normally expect neon to form compounds?
A
yes, but neon is a rare gas and difficult to obtain
B
no, neon has eight electrons in its outermost level and is stable
C
yes, neon needs six valence electrons to fill its outermost energy level
D
no, neon needs six electrons to fill its outermost level
15) Which pair of elements would most likely have a similar arrangement of outer electrons and have similar chemical behaviors?
A
Boron and aluminum
B
Chlorine and oxygen
C
Helium and fluorine
D
Carbon and nitrogen
16) Which is a property of the noble gases in group 18?
A
High electrical conductivity
B
Brittleness
C
unlikely to react with other elements
D
Malleability
*select an answer for all questions
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