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- 1. Multiple Choice
Which of the following is NOT an example of matter?
air
heat
smoke
water vapor
- 2. Multiple Choice
All of the following are physical properties of matter EXCEPT
mass
color
melting point
ability to rust
- 3. Multiple Choice
A vapor is which state of matter?
solid
liquid
gas
all of the above
- 4. Multiple Choice
A substance that forms a vapor is generally in what physical state at room temperature?
solid
liquid
gas
liquid or solid
- 5. Multiple Choice
Which of the following is true about homogeneous mixtures?
They are known as solutions
They consist of two or more phases
They have compositions that never vary
They are always liquids
- 6. Multiple Choice
Which of the following is a homogeneous mixture?
salt water
beef stew
sand and water
soil
- 7. Multiple Choice
An example of a homogeneous mixture is
water
stainless steel
noodle soup
oxygen
- 8. Multiple Choice
Which of the following materials is a substance?
air
gasoline
stainless steel
silver
- 9. Multiple Choice
The first figure in a properly written chemical symbol always is
boldfaced
capitalized
italicized
underlined
- 10. Multiple Choice
Which of the following is used for chemical symbols today?
drawings
icons
letters
numbers
- 11. Multiple Choice
Which of the following represents a compound?
H
H-3
H2O
O-16
- 12. Multiple Choice
In the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water, which of the following is a reactant?
sucrose
carbon dioxide
water
heat
- 13. Multiple Choice
What must occur for a change to be a chemical reaction?
There must be a change in chemical properties.
There must be a change in physical properties
The change must involve a change in mass
The change must involve a change in volume.
- 14. Multiple Choice
Which of the following is NOT a physical change?
grating cheese
melting cheese
fermenting of cheese
mixing two cheeses in a bowl
- 15. Multiple Choice
Which of the following does NOT involve a physical change?
mixing
melting
grinding
decomposing
- 16. Multiple Choice
Which of the following is a chemical property of water at 4 C?
its color
its state
its temperature
its ability to decompose into hydrogen and oxygen
- 17. Multiple Choice
When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place?
a physical change
a chemical change
neither a physical change nor a chemical change
both a physical change and a chemical change
- 18. Multiple Choice
Which of the following does NOT indicate that a chemical change may have taken place?
fracture formation
gas production
precipitate formation
energy transfer
- 19. Multiple Choice
What happens to matter during a chemical reaction?
matter is neither destroyed or created
some matter is destroyed
some matter is created
some matter is destroyed and some is created
- 20. Multiple Choice
Which of the following is NOT a part of Dalton's atomic theory?
All elements are composed of atoms.
Atoms are always in motion
Atoms of the same element are identical.
Atoms that combine do so in simple whole-number ratios.
- 21. Multiple Choice
Dalton hypothesized that atoms are indivisible and that all atoms of an element are identical. It is now known that
all of Dalton's hypotheses are correct
atoms of an element can have different numbers of protons
atoms are divisible
all atoms of an element are not identical but they must all have the same mass
- 22. Multiple Choice
Using the periodic table, determine the number of neutrons in 16O
4
8
16
24
- 23. Multiple Choice
Select the correct symbol for an atom of tritium
1
n
0
1
H
1
2
H
1
3
H
1
- 24. Multiple Choice
Which of the following sets of symbols represents isotopes of the same element?
JJJ
LLL
MMM
QQQ
- 25. Multiple Choice
How is the number of neutrons in the nucleus of an atom calculated?
Add the number of electrons and protons together
Subtract the number of electrons from the number of protons.
Subtract the number of protons from the mass number.
Add the mass number to the number of electrons
- 26. Multiple Choice
How does the energy of an electron change when the electron moves closer to the nucleus?
it decreases
it increases
it stays the same
it doubles
- 27. Multiple Choice
The principal quantum number indicates what property of an electron?
position
speed
energy level
electron cloud shape
- 28. Multiple Choice
What is the shape of the 3p atomic orbital?
sphere
dumbbell
bar
two perpendicular dumbbells
- 29. Multiple Choice
What is the maximum number of f orbitals in any single energy level in an atom?
1
3
5
7
- 30. Multiple Choice
What is the maximum number of electrons in the second principal energy level?
2
8
18
32
- 31. Multiple Choice
What is the basis for exceptions to the aufbau diagram?
Filled and half-filled energy sublevels are more stable than partially-filled energy sublevels.
Electron configurations are only probable.
Electron spins are more important than energy levels in determining electron configuration.
Some elements have unusual atomic orbitals.
- 32. Multiple Choice
Which of the following electromagnetic waves have the highest frequencies?
ultraviolet light waves
x rays
microwaves
gamma rays
- 33. Multiple Choice
Which type of electromagnetic radiation includes the wavelength 10 ^-7 m?
gamma ray
microwave
radio wave
visible light
- 34. Multiple Choice
Emission of light from an atom occurs when an electron
drops from a higher to a lower energy level
jumps from a lower to a higher energy level
moves within its atomic orbital
falls into the nucleus
- 35. Multiple Choice
How do the energy differences between the higher energy levels of an atom compare with the energy differences between the lower energy levels of the atom?
They are greater in magnitude than those between lower energy levels
They are smaller in magnitude than those between lower energy levels.
There is no significant difference in the magnitudes of these differences.
No answer can be determined from the information given.
- 36. Multiple Choice
What are quanta of light called?
charms
excitons
muons
photons
- 37. Multiple Choice
Which scientist developed the quantum mechanical model of the atom?
Albert Einstein
Erwin Schrodinger
Niels Bohr
Ernest Rutherford
- 38. Multiple Choice
The quantum mechanical model of the atom
defines the exact path of an electron around the nucleus
was proposed by Niels Bohr
involves the probability of finding an electron in a certain position
has many analogies in the visible world
- 39. Multiple Choice
Who predicted that all matter can behave as waves as well as particles?
Albert Einstein
Erwin Schrodinger
Max Planck
Louis de Broglie
- 40. Multiple Choice
How can the position of a particle be determined?
by analyzing its interactions with another particle
by measuring its velocity
by measuring its mass
by determining its charge
- 41. Multiple Choice
Which of the following elements is in the same period as phosphorus?
carbon
magnesium
nitrogen
oxygen
- 42. Multiple Choice
Who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?
Henry Moseley
Antoine Lavoisier
John Dalton
Dmitri Mendeleev
- 43. Multiple Choice
Which of the following categories includes the majority of the elements?
metalloids
liquids
metals
non metals
- 44. Multiple Choice
Of the elements Pt, V, Li, and Kr, which is a nonmetal?
Pt
V
Li
Kr
- 45. Multiple Choice
Which of the following is true about the electron configurations of the noble gases?
The highest occupied s and p sublevels are completely filled.
The highest occupied s and p sublevels are partially filled.
The electrons with the highest energy are in a d sublevel
The electrons with the highest energy are in an f sublevel.
- 46. Multiple Choice
Which subatomic particle plays the greatest part in determining the properties of an element?
proton
electron
neutron
none of the above
- 47. Multiple Choice
What are the Group 1A and Group 7A elements examples of?
representative elements
transition elements
noble gases
nonmetallic elements
- 48. Multiple Choice
How does atomic radius change from left to right across a period in the periodic table?
It tends to decrease.
It tends to increase.
It first increases, then decreases
It first decreases, then increases.
- 49. Multiple Choice
What causes the shielding effect to remain constant across a period?
Electrons are added to the same principal energy level
Electrons are added to different principal energy levels
The charge on the nucleus is constant.
The atomic radius increases.
- 50. Multiple Choice
Which of the following statements is true about ions?
Cations form when an atom gains electrons.
Cations form when an atom loses electrons.
Anions form when an atom gains protons.
Anions form when an atom loses protons.
- 51. Multiple Choice
Why is the second ionization energy greater than the first ionization energy?
It is more difficult to remove a second electron from an atom.
The size of atoms increases down a group.
The size of anions decreases across a period.
The nuclear attraction from protons in the nucleus decreases.
- 52. Multiple Choice
For Group 2A metals, which electron is the most difficult to remove?
the first
the second
the third
All the electrons are equally difficult to remove.
- 53. Multiple Choice
Which of the following factors contributes to the decrease in ionization energy within a group in the periodic table as the atomic number increases?
increase in atomic size
increase in size of the nucleus
increase in number of protons
fewer electrons in the highest occupied energy level
- 54. Multiple Choice
What is the name given to the electrons in the highest occupied energy level of an atom?
orbital electrons
valence electrons
anions
cations
- 55. Multiple Choice
What is the electron configuration of the calcium ion?
1s2s2p3s3p
1s2s2p3s3p4s2
1s2s2p3s3p4s1
1s2s2p3s
- 56. Multiple Choice
How many electrons does barium have to give up to achieve a noble-gas electron configuration?
1
2
3
4
- 57. Multiple Choice
Which of the following ions has a pseudo-noble-gas electron configuration?
Fe
Mn
Cu
Ni
- 58. Multiple Choice
How many valence electrons are transferred from the nitrogen atom to potassium in the formation of the compound potassium nitride?
0
1
2
3
- 59. Multiple Choice
How many valence electrons are transferred from the calcium atom to iodine in the formation of the compound calcium iodide?
0
1
2
3
- 60. Multiple Choice
What is the formula unit of sodium nitride?
NaN
Na2N
Na3N
NaN3
- 61. Multiple Choice
What is the formula for sodium sulfate?
NaSO4
Na2SO4
Na(SO4)2
Na2(so4)2
- 62. Multiple Choice
Which of the following compounds has the formula KNO ?
potassium nitrate
potassium nitride
potassium nitrite
potassium nitrogen oxide
- 63. Multiple Choice
Which of the following pairs of elements is most likely to form an ionic compound?
magnesium and fluorine
nitrogen and sulfur
oxygen and chlorine
sodium and aluminum
- 64. Multiple Choice
What is the basis of a metallic bond?
the attraction of metal ions to mobile electrons
the attraction between neutral metal atoms
the neutralization of protons by electrons
the attraction of oppositely charged ions
- 65. Multiple Choice
Which noble gas has the same electron configuration as the oxygen in a water molecule?
helium
neon
argon
xenon
- 66. Multiple Choice
The nonmetals in Groups 6A and 7A
lose electrons when they form ions
have a numerical charge that is found by subtracting 8 from the group number
all have ions with a –1 charge
end in -ate
- 67. Multiple Choice
Why are systematic names preferred over common names?
Common names do not provide information about the chemical composition of the compound.
Common names are derived from the method used to obtain the compound
Common names were assigned by the scientist who discovered the compound
Common names are not very descriptive
- 68. Multiple Choice
Which of the following compounds contains the Mn 3+ ion?
MnS
MnBr2
Mn2O3
MnO
- 69. Multiple Choice
How are chemical formulas of binary ionic compounds generally written?
cation on left, anion on right
anion on left, cation on right
Roman numeral first, then anion, then cation
subscripts first, then ions
- 70. Multiple Choice
Which of the following is true about the composition of ionic compounds?
They are composed of anions and cations
They are composed of anions only.
They are composed of cations only.
They are formed from two or more nonmetallic elements.
- 71. Multiple Choice
Which of the following compounds contains the lead(II) ion?
PbO
PbCl4
Pb2O
Pb2S
- 72. Multiple Choice
Which of the following correctly shows a prefix used in naming binary molecular compounds with its corresponding number?
deca-, 7
nona-, 9
hexa-, 8
octa-, 4
- 73. Multiple Choice
Which of the following formulas represents a molecular compound?
ZnO
Xe
SO2
BeF2
- 74. Multiple Choice
What is the name of H 2SO3 ?
hyposulfuric acid
hydrosulfuric acid
sulfuric acid
sulfurous acid
- 75. Multiple Choice
What is the formula for hydrosulfuric acid?
H2S2
H2SO2
HSO2
H2S
- 76. Multiple Choice
What is the correct name for the compound CoCl ?
cobalt(I) chlorate
cobalt(I) chloride
cobalt(II) chlorate
cobalt(II) chloride
- 77. Multiple Choice
Suppose you encounter a chemical formula with H as the cation. What do you know about this compound immediately?
It is a polyatomic ionic compound.
It is an acid.
It is a base
It has a +1 charge.
- 78. Multiple Choice
What is the correct formula for calcium dihydrogen phosphate?
CaH2PO4
Ca2H2PO4
CA(H2PO4)2
Ca(H2HPO4)2
- 79. Multiple Choice
Which of the following is NOT a representative particle?
atom
cation
anion
all of the above
- 80. Multiple Choice
How many atoms are in 3.5 moles of arsenic atoms?
5.8 x10 -24 atoms
7.5 x 10 1 atoms
2.1x 10 24 atoms
1.7 x10 23 atoms
- 81. Multiple Choice
Butanol is composed of carbon, hydrogen, and oxygen. If 1.0 mol of butanol contains 6.0 x 10 24 atoms of hydrogen, what is the subscript for the hydrogen atom in C 4 H 2 O?
1
10
6
8
- 82. Multiple Choice
Which of the following is NOT a true about atomic mass?
The atomic mass is 12 g for magnesium.
The atomic mass is the mass of one mole of atoms.
The atomic mass is found by checking the periodic table.
The atomic mass is the number of grams of an element that is numerically equal to the mass in amu.
- 83. Multiple Choice
What is the mass in grams of 5.90 mol C 8 H 10 ?
0.0512g
19.4g
389g
673g
- 84. Multiple Choice
What is the number of moles in 432 g Ba(NO 3)2 ?
0.237 mol
0.605 mol
1.65 mol
3.66 mol
- 85. Multiple Choice
What is the volume, in liters, of 0.500 mol of C 3 H 8 gas at STP?
0.0335 L
11.2 L
16.8 L
22.4 L
- 86. Multiple Choice
What is the density at STP of the gas sulfur hexafluoride, SF ?
0.153 g/L
6.52 g/L
3270 g/L
3.93 x 10 24 g/L
- 87. Multiple Choice
The molar mass of a certain gas is 49 g. What is the density of the gas in g/L at STP?
3.6 x 10 -24 g/L
0.46 g/L
2.2 g/L
71 g/L
- 88. Multiple Choice
If 60.2 grams of Hg combines completely with 24.0 grams of Br to form a compound, what is the percent composition of Hg in the compound?
28.5%
39.9%
71.5%
60.1%
- 89. Multiple Choice
Which of the following compounds has the lowest percent gold content by weight?
AuOH
Au(OH)3
AuCl3
AuI3
- 90. Multiple Choice
Which of the following sets of empirical formula, molar mass, and molecular formula is correct?
CH, 78 g, C13H13
CH4N2, 90g, C3 H12 N 3
CaO, 56g, Ca2 O2
C3H8O, 120 g, C3 H8 O2
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