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3rd Q Or Midterm Review
Test Description: Ludwig practice good for midterm o 3rdror 4th
Instructions: Answer all questions to get your test result.
1) What phase changes does water undergo at 100 degrees Celsius?
A
d) condensation and vaporization
B
a) melting and freezing
C
c) vaporization and freezing
D
b) condensation and melting
2) Which of the following has neither definite shape nor definite volume?
A
aq
B
l
C
s
D
g
3) The phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first is
A
a) melting
B
d) sublimation
C
b) deposition
D
c) condensation
4) Which of the following exibits hydrogen bonding?
A
b) HCl
B
a) CO2
C
c) H20
D
NaCl
5) Which of the following have the highest average kinetic energy?
A
10 ml of water at 20 degrees
B
200 ml of water at 20 degrees
C
100 ml of water at 30 degrees
D
10 ml of water at 55 degrees
6) How many electrons are shared in a triple bond?
A
4
B
2
C
0
D
6
7) What phase change is endothermic?
A
gas to liquid
B
gas to solid
C
solid to liquid
D
liquid to solid
8) Elements found on the lower left of the Periodic Table are classified as
A
Metalloids
B
Noble Gases
C
Nonmetals
D
Metals
9) In which group are Halogens found?
A
1
B
3-11
C
17
D
18
10) Which element is classified as a metal, but is liquid at room temperature?
A
Hg
B
H
C
Br
D
I
11) In which shell or energy level are the valence electrons of the elements in Period 2 found?
A
5
B
2
C
1
D
3
12) Which set of symbols represents atoms with valence electrons in the same electron shell or energy level?
A
Ba, Br, Bi
B
O, S, Te
C
Mn, Hg, Cu
D
Sr, Sn, I
13) What are two properties of most nonmetals?
A
a) high ionization energy and poor electrical conductivity
B
d) low ionization energy and good electrical conductivity
C
b) high ionization energy and good electrical conductivity
D
c) low ionization energy and poor electrical conductivity
14) For a chemical system at equilibrium, the concentrations of both the reactants and the products must
A
increase
B
decreases
C
are constant
D
are equal
15) What is the number of neutrons in an atom of Zinc?
A
a) +2
B
b) 30
C
35
D
c) 65
16) Which molecule is nonpolar?
A
a) H2O
B
d) CCl4
C
c) CO
D
b) NH3
17) Which substance will dissolve in water to conduct electricity?
A
b) NO2
B
a) CCl4
C
c) NaCl
D
d) CO2
18) At STP, fluorine is a gas and bromine is a liquid because
A
d) bromine has stronger intermolecular forces
B
b) bromine has stronger covalent bonds
C
a) fluorine has stronger covalent bonds
D
c) fluorine has stronger intermolecular forces
19) What is the mass of a neutron?
A
almost zero
B
1 gram
C
1 atomic mass unit
D
2 atomic mass units
20) In Rutherford's experiment, some of the alpha particles were deflected because...
A
atom are mostly empty space
B
atoms have a positive nucleus
C
electrons are in orbitals
D
atoms have electrons
*select an answer for all questions
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