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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
metalloids
B
semiconductors
C
metals
D
nonmetals
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 is a soft and shiny metal
D
it conducts electricity
3) elements that share properties of both metals and nonmetals are called?
A
Periods
B
Ions
C
Valences
D
Semiconductors/metalloids
4) Which statement about alkali metals is correct?
A
form negative ions with 1- charge
B
are usually gases
C
they are extremely nonreactive
D
They are located in the left most column of the periodic table
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
solidify at standard pressure and temperature
D
unlikely to combine with other elements
6) Which is not a family of the periodic table?
A
noble gases
B
anions
C
halogens
D
alkaline-earth metals
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
halogens
B
noble gases
C
transition metals
D
Alkaline earth metals
9) Highly reactive elements that belong to Group 1
A
noble gases
B
metalloids
C
halogens
D
alkali metals
10) Elements that belong to groups 3-12 and are somewhat reactive
A
metalloids
B
transition metals
C
alkali metals
D
alkaline earth metals
11) Group 2 elements that have two valence electrons
A
halogens
B
alkaline earth metals
C
noble gases
D
transition metals
12) What is the Hund's rule?
A
two electrons in the same orbital must have separate spins
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
electrons will enter empty orbitals of the same energy level before pairing up in an orbital with an electron already preset
13) According to the Aufbau Principle
A
electrons enter orbitals of lowest energy first
B
electrons in the same orbital must have opposite spins
C
an orbital may be occupied by only 2 electrons
D
electrons enter orbitals of highest energy first
14) Would you normally expect neon to form compounds?
A
no, neon has eight electrons in its outermost level and is stable
B
yes, but neon is a rare gas and difficult to obtain
C
no, neon needs six electrons to fill its outermost level
D
yes, neon needs six valence electrons to fill its outermost energy 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
Carbon and nitrogen
D
Helium and fluorine
16) Which is a property of the noble gases in group 18?
A
Brittleness
B
unlikely to react with other elements
C
High electrical conductivity
D
Malleability
*select an answer for all questions
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