Download 1) - Kurt Niedenzu

Final EOC Review - Sheet 2
1)
When an ionic bond is formed, the atom that transfers its
valence electron is the atom that has the
a) higher electro negativity value
b) lower atomic number
c) higher atomic mass
d) lower ionization energy
2)
What type of bond is found in copper metal?
a) Ionic
b) Covalent
c) Metallic
d) polar
3)
In potassium hydrogen carbonate, KHCO3,the bonds are
a) ionic, only
c) covalent, only
b) both ionic & covalent d) both covalent & metallic
4)
When potassium and chlorine form a chemical compound,
energy is
a) released and ionic bonds are formed
b) released and covalent bonds are formed
c) absorbed and ionic bonds are formed
d) absorbed and covalent bonds are formed
15) Which of the following is not a polar molecule?
a) HF
b) H2O
c) NH3 d) CH4
16) Which statement best explains why carbon tetrachloride
(CCl4) is non-polar?
a) Each carbon-chloride bond is polar.
b) Carbon and chlorine are both nonmetals.
c) Carbon tetrachloride is an organic compound.
d) The carbon tetrachloride molecule is symmetrical.
17) The weakest attractive forces exist between molecules of
a) C2H6
b) C3H8
c) C4H10
d) C5H12
18) Hydrogen bonds are strongest between molecules of
a) HF(l)
b) HCl(l)
c) HBr(l)
d) HI(l)
19) The process in which water molecules surround ions in
solution is called
a) van der Waals forces
c) hydration
b) hydrogen bonding d) dipole bonding
5)
Which substance, in its solid phase, contains positive ions
distributed in a diffuse cloud of electrons?
a) N2
b) C
c) Mg
d) CO2
20) Which compound has the empirical formula P2O5?
a) potassium (II) oxide c) potassium (V) oxide
b) phosphorus (II) oxide d) phosphorus (V) oxide
6)
If a pure substance is a good conductor of electricity in
both its solid and its liquid phases, the bonding in the
substance is predominantly
a) Ionic
c) Metallic
b) polar covalent
d) non-polar covalent
21) What is the name for the compound with the formula
NH4NO2?
a) ammonium nitride c) ammonium nitrite
b) ammonia nitrate d) ammonium nitrate
7)
Which compound best illustrates ionic bonding?
CCl4
b) MgCl2
c) H2O
d) CO2
8)
Which type of solid generally has the lowest melting point?
a) Molecular b) Metallic
c) Ionic
d) Network
9)
Which sample of HCl most readily conducts electricity?
a) HCl (solid)
c) HCl (liquid)
b) HCl (gas)
d) HCl (aqueous)
10) An atom that loses or gains electrons becomes
a) an ion
c) an isotope
b) a molecule
d) an electrolyte
11) Which kind of bond is formed when two atoms share
electrons to form a molecule?
a) Ionic b) Metallic
c) Electrovalent
d) Covalent
12) Which molecule contains a non-polar covalent bond?
22) What is the formula of potassium hydride?
a) KH
b) KH2
c) KOH
d) K(OH)2
23) Which represents both an empirical and a molecular formula?
a) P4O10
b) NO2 c) C3H6 d) C6H12O6
24) Which is an empirical formula?
a) C2H2
b) C2H4
c) Al2Cl6
d) K2O
25) If a pure substance is hard, a poor conductor of heat and
electricity, and has a high melting point it is most likely
a) a metal
c) a network solid
b) an ionic solid
d) a polar covalent compound
26) The elements in the modern Periodic Table are arranged in
order of increasing
a) atomic number
c) atomic mass
b) ionic radius
d) oxidation state
27) Which of the following has the highest first ionization energy?
a) Li
b) Na
c) K
d) Rb
28) Which of the following is the most active metal?
a) Carbon
b) Boron
c) Beryllium
d) lithium
13) What accounts for the stability of the noble gas electron
configuration?
a) presence of 8 electrons in the outer energy level
b) equal charge of protons and electrons
c) diffusion of electrons to all energy levels
d) equal number of electrons in the outermost and
innermost energy levels
14) Why is NH3 classified as polar molecule?
a) It is a gas at STP
b) N-H bonds are non-polar
c) Nitrogen and hydrogen are both nonmetals.
d) NH3 molecules have asymmetrical charge distributions.
29) Which is a chemically active nonmetal?
a) F
b) Na
c) Si
d) Kr
30) Within a period, the element with the lowest first ionization
energy is found in Group
a) 1
b) 14
c) 17
d) 18
31) Atoms of which of the following elements have the greatest
tendency to gain electrons?
a) Phosphorus
c) Carbon
b) Chlorine
d) Boron
Final EOC Review - Sheet 2
32) The increase in atomic radius of each successive element
within a group is primarily due to an increase in the
number of
a) neutrons in the nucleus
b) electrons in the outermost shell
c) unpaired electrons
d) occupied principal energy levels
33) Elements that have properties of both metals and
nonmetals are called
a) alkali metals
c) metalloids
b) transition elements d) halogens
34) According to the modern periodic law, the chemical
properties of elements are periodic functions of their
a) ionic charges
c) oxidation states
b) atomic numbers
d) mass numbers
35) Which pair of properties is most closely associated with
nonmetals?
a) low ionization energy & good electrical conductivity
b) high ionization energy & poor electrical conductivity
c) low ionization energy & poor electrical conductivity
d) high ionization energy & good electrical conductivity.
36) Which of the following elements has the most metallic
character?
a) Bromine
c) Chlorine
b) Fluorine
d) Iodine
37) Which element exhibits both metallic and nonmetallic
properties?
a) boron b) barium c) potassium d) argon
38) Which of the following fifth-period elements is most likely
to be malleable?
a) 48Cd
b) 52Te
c) 53I
d) 54Xe
39) Which period contains three elements that commonly exist
as diatomic molecules at ordinary conditions?
a) Period 1 b) Period 2
c) Period 6
d) Period 7
40) Elements in the same period have the same number of
a) Protons
c) Valence electrons
b) Neutrons
d) Occupied principal energy levels
41) Within a period, as atomic number increases, ionization
energy generally
a) Increases
b) Decreases
c) Remains the same
42) As the elements of Period 2 are considered from left to
right, there is a decrease in
a) ionization energy
c) Atomic mass
b) metallic character
d) Nonmetallic character
43) Which element is a member of the halogen family?
a) K
b) B
c) I
d) S
44) The
a)
b)
c)
d)
S2- ion differs from the S° atom in that the S2- ion has
smaller radius and fewer electrons
smaller radius and more electrons
larger radius and fewer electrons
larger radius and more electrons
45) Which element occurs in nature only in compounds?
a) Au
b) Na
c) Ne
d) Ag
46) One reason that fluorine has a higher ionization energy than
oxygen is that fluorine has a
a) smaller nuclear charge
b) larger nuclear charge
c) smaller number of neutrons
d) greater number of neutrons
47) Which property applies to most nonmetals in the solid state?
a) Brittle
c) good conductors of electricity
b) Malleable d) good conductors of heat
48) Which is most closely followed as one goes down the Periodic
Table with Group 1 elements?
a) increasing metallic activity and increasing atomic radius
b) increasing metallic activity and decreasing atomic radius
c) decreasing metallic activity and increasing atomic radius
d) decreasing metallic activity and decreasing atomic radius
49) Which is formed when the first ionization energy is applied to
an atom?
a) an ion with negative charge
b) an ion with positive charge
c) an ion with either positive or negative charge
d) two ions, one with positive charge, one with negative
charge
50) Which class includes the greatest number of chemical
elements?
a) Metalloids
c) Metals
b) noble gases
d) nonmetals
51) Within a group, as atomic number increases, electronegativity generally
a) Increases
b) Decreases
c) remains the same
52) Within a group, as atomic radius increases, ionization energy
generally
a) Increases
b) Decreases
c) stays the same
53) Which of the following pairs exhibits the most similar chemical
properties?
a) Mg and S
c) Ca and Br
b) Mg and Ca
d) S and Cl
54) Which group contains the most active nonmetals?
a) 1 (2) 13 (3) 15 (4) 17
55) Which group of elements usually forms oxides with the
general formula X2O3?
a) 3
b) 2
c) 13
d) 14 .
56) A white anhydrous (dry) powder that dissolves in water to
form a blue aqueous solution is most likely to be
a) Na2S04 b) BaSO4
c) CuSO4
d)CaSO4
57) Which symbol represents an alkaline earth metal?
a) Na
b) Mg
c) Ne
d ) Ag
58) If X represents an element from Group 1, the formula of its
oxide is
a) XO
b) X2O
c) XO2
d) X2O3
59) Which of the following noble gases has the lowest normal
boiling point?
a) Ne
b) Ar
c) Kr
d) Xe