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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
c) vaporization and freezing
C
b) condensation and melting
D
a) melting and freezing
2) Which of the following has neither definite shape nor definite volume?
A
aq
B
g
C
s
D
l
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
c) condensation
B
b) deposition
C
a) melting
D
d) sublimation
4) Which of the following exibits hydrogen bonding?
A
NaCl
B
a) CO2
C
b) HCl
D
c) H20
5) Which of the following have the highest average kinetic energy?
A
10 ml of water at 55 degrees
B
10 ml of water at 20 degrees
C
200 ml of water at 20 degrees
D
100 ml of water at 30 degrees
6) How many electrons are shared in a triple bond?
A
2
B
6
C
0
D
4
7) What phase change is endothermic?
A
solid to liquid
B
gas to liquid
C
liquid to solid
D
gas to solid
8) Elements found on the lower left of the Periodic Table are classified as
A
Nonmetals
B
Metalloids
C
Noble Gases
D
Metals
9) In which group are Halogens found?
A
3-11
B
17
C
18
D
1
10) Which element is classified as a metal, but is liquid at room temperature?
A
I
B
H
C
Hg
D
Br
11) In which shell or energy level are the valence electrons of the elements in Period 2 found?
A
1
B
5
C
2
D
3
12) Which set of symbols represents atoms with valence electrons in the same electron shell or energy level?
A
Sr, Sn, I
B
Ba, Br, Bi
C
Mn, Hg, Cu
D
O, S, Te
13) What are two properties of most nonmetals?
A
c) low ionization energy and poor electrical conductivity
B
d) low ionization energy and good electrical conductivity
C
a) high ionization energy and poor electrical conductivity
D
b) high ionization energy and good electrical conductivity
14) For a chemical system at equilibrium, the concentrations of both the reactants and the products must
A
increase
B
are equal
C
decreases
D
are constant
15) What is the number of neutrons in an atom of Zinc?
A
b) 30
B
35
C
c) 65
D
a) +2
16) Which molecule is nonpolar?
A
c) CO
B
d) CCl4
C
a) H2O
D
b) NH3
17) Which substance will dissolve in water to conduct electricity?
A
c) NaCl
B
a) CCl4
C
b) NO2
D
d) CO2
18) At STP, fluorine is a gas and bromine is a liquid because
A
d) bromine has stronger intermolecular forces
B
c) fluorine has stronger intermolecular forces
C
b) bromine has stronger covalent bonds
D
a) fluorine has stronger covalent bonds
19) What is the mass of a neutron?
A
1 atomic mass unit
B
2 atomic mass units
C
almost zero
D
1 gram
20) In Rutherford's experiment, some of the alpha particles were deflected because...
A
atoms have a positive nucleus
B
atoms have electrons
C
atom are mostly empty space
D
electrons are in orbitals
*select an answer for all questions
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