Which of the following accurately describes the Bohr model?

Electrons exist in a series of distinct energy levels.

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Chemistry Mid-Term Exam

100 termsStudBud Administration221 plays

Imported from external platform

Flashcards100 cardsFPractice quizPHost liveL

Questions 100

Answers

1
When all the orbitals for an atom are combined, a roughly spherical region is produced around the atom called the _____.
energy sublevel
photon
principal quantum number
electron cloud
2
How many significant figures are in the measurement 4800 cm?
1
4
2
3
3
the ability of a material to transfer heat or electricity
conductivity
reactivity
flammability
density
4
How many significant figures are in the measurement 0.000 34 m?
6
2
3
5
5
What sublevel has a dumbbell shape?
f
s
d
p
6
What is the smallest particle that makes up an element and is capable of chemical interaction?
electron
atom
proton
neutron
7
How many principal quantum numbers are there?
7
5
3
1
8
How many atoms of sulfur are present in Al2(SO4)3?
2
6
4
3
9
Two different isotopes of a single element would have the same number of __________ but a different number of _________.
electrons; protons
protons; ions
protons; neutrons
neutrons; protons
10
What is something that we can used to identify if a chemical change has occured.
temperature change
gas being released
color change
all of the above
11
The type of sublevel found in all principal energy levels is the _____.
s sublevel
p sublevel
f sublevel
d sublevel
12
Which state of matter exists in stars?
liquid
solid
plasma
gas
13
How many atoms of oxygen (O) are there in a molecule of penicillin G (C16H18N2O4S)?
4
20
10
2
14
Information that consists of descriptions and not numerical values is called __________ data.
subjective
qualitative
deductive
quantitative
15
The measure of the dispersal of energy in a system is known as __________.
energy
enthalpy
entropy
16
butter placed on a hot pan turns inta a liquid
sublimation
melting
vaporization
freezing
17
the ability for matter to be turned into a wire
conductivity
malleability
toxicity
ductility
18
The d sublevel may contain up to _________ electrons.
14
2
6
10
19
Which law of thermodynamics states that energy cannot be created nor destroyed.
second law of thermodynamics
first law of thermodynamics
thrid law of thermodynamics
20
The mass of a crystal was measured on a balance to be 8 grams. This would be an example of __________ data.
quantitative
subjective
deductive
qualitative
21
boiling water evaporates into steam
condensation
vaporization
sublimation
deposition
22
Which of the following accurately describes the Bohr model?
Electrons are found inside and outside the nucleus.
Electrons exist in a series of distinct energy levels.
An electron can exist as both a particle and a wave.
Electrons are found in orbitals around the nucleus.
23
J. J. Thomson concluded that every atom contained small, __________ particles.
positively charged
negatively charged
neutrally charge
dense
24
contains only one orbital
f sublevel
p sublevel
s sublevel
d sublevel
25
What is the measurement of the average kinetic energy of all the particles within a substance.
heat
acoustic energy
toxicity
temperatures
26
What is the current atomic model?
quantum-mechanical model
Heisenberg model
bohr’s model
Broglie model
27
You measure products three times and get 4.12 g, 3.25 g, and 4.79 g. The actual mass is 2.25 g. Your measurements are
neither accurate nor precise
accurate but not precise
precise but not accurate
both accurate and precise
28
Which temperature scale CANNOT be used for scientific inquiry?
kelvin
fahrenheit
celsius
29
What does 25 500 g equal in kilograms?
2.55
255
25.5
2550
30
Who is credited with the discovery of the neutron?
Ernest Rutherford
Niels Bohr
Hans Geiger
James Chadwick
31
Chocolate milk is an example of what type of mixture?
heterogeneous
homogenous
simple
pure substances
32
on really cold days rain solidifies into snw
melting
freezing
vaporization
sublimation
33
holds the greatest amount of electrons
d sublevel
s sublevel
p sublevel
f sublevel
34
Which model the launches alpha particles towards a gold foil and seeing some pass through and other being deflected?
law of multiple proportions
plum pudding model
Rutherford’s model
Dalton’s model
35
Who came up with the a model where atoms are solid spheres of differing shape?
J. J. Thomson
Earnest Rutherford
James Chadwick
John Dalton
36
In the formula Mg(OH)2, the numeral 2 is called a __________.
superscript
base number
subscript
coefficient
37
Chemical and physical processes that absorb thermal energy are called __________ processes.
endothermic
exothermic
ectothermic
natural
38
The sum of the number of neutrons and the number of protons in an isotope represents the __________ of the isotope.
atomic mass
atomic mass unit
mass number
atomic number
39
The weighted averages of the isotopes of an element determine its __________.
mass number
atomic number
atomic weight
atomic mass
40
What is the ability to do work?
chemical change
energy
work
41
How many hydrogen atoms are in the chemical formula H2O?
2
4
1
3
42
What is the study of matter and the changes that it undergoes?
pure science
modeling
chemistry
applied science
43
the ability for matter to hammered into different shapes
conductivity
toxicity
malleability
ductility
44
The first step in the scientific model begins with an __________.
observation
data
experimentation
proof
45
What is the maximum number of electrons in a 3p orbital?
2
6
8
10
46
Perform the following operation: 7.491 m + 60.2 m + 1.002 24 m.
68.7 m
68.6 m
68.64 m
69 m
47
Sand and salt are mixed together. Which technique can be used to seperate them.
distillation
suspending
decanting
filtration
48
Pure water is a __________.
compound
polyatomic element
monatomic element
diatomic element
49
Perform the following operation: (26.9 m)(5.0 m).
130 m2
134.5 m2
1300 m2
1.34 m2
50
The kinetic-molecular theory is a model that describes the __________ of particles in matter.
movement
temperature
composition
mass
51
Sulfur has how many valence electrons?
4
8
6
2
52
What is the pattern for colored lines that was discovered while analyzing light produced by heated elements?
excited state
color spectrum
emission spectrum
ground state
53
What are the 3 major concepts of a Biblical worldview.
creation, flood, confusion
curse, fullfilment, affirmation
fall, curse, redemption
creation, fall, redemption
54
The fact that any sample of water contains 8 g of oxygen for every 1 g of hydrogen illustrates __________.
the continuous theory of matter
the table of elements
the law of definite proportion
atomism
55
dew on the grass in the morning is caused by
sublimation
condensation
deposition
vaporization
56
You measure the mass of a product to be 1.87 g. Theoretical calculations predict that you should have obtained 1.95 g
3.9%
12.1%
5.6%
4.1%
57
The number of protons in an atom’s nucleus is its __________.
atomic model
atomic number
atomic mass
nucleus
58
Oxygen (O2) is a __________.
monatomic element
diatomic element
diatomic element
compound
59
What scientist was responsible for the discovery of the electron?
James Chadwick
J. J. Thomson
Earnest Rutherford
John Dalton
60
gas turns directly into a solid
deposition
vaporization
sublimation
condensation
61
Which phase would be categorized by having more particle attraction that kinetic energy.
plasma
liquid
gas
solid
62
The extremely small and dense center of an atom.
proton
neutron
nucleus
electron
63
It indicates how repeatable a measurement is or how exactly one can make a measurement
precision
significant figure
measurement
accuracy
64
Who used cathod rays to discover the electron?
James Chadwick
J. J. Thomson
John Dalton
Earnest Rutherford
65
All matter is made up of tiny particles called what?
waves
atoms
rings
orbs
66
The experiment in which alpha particles were deflected by gold foil was conducted by __________.
James Chadwick
Ernest Rutherford
Wilhelm Röentgen
Werner Heisenberg
67
Which of the following statements shows a naturalistic worldview?
Scripture can account for the existence of every subject in creation
Science can ultimately explain everything we see in this world.
Humans are accountable for taking care of the world and the needs of people
The study of chemistry is useful to help us understand the created world.
68
Which form of matter has fast-moving and widely spaced particles?
gas
solid
plasma
liquid
69
how likely matter is to react with other substances
density
flammability
conductivity
reactivity
70
The measurement 0.005 006 10 m has how many significant figures?
6
8
5
3
71
If electrons occupy the same orbital, they must have opposite spins. This is stated by the __________.
Aufbau principle
law of definite composition
Pauli exclusion principle
Heisenberg uncertainty principle
72
the amount of matter that is packed into a specific volume
conductivity
reactivity
flammability
density
73
What are the four things that make up the electron address.
principal quantum number, sublevel, orbital, spin
energy level, direction, spin, mass
principal quantum number, distance, speed, mass
spin, distance, quantum number, sublevel
74
An evaluation of how close a measured value is to the expected or accepted value of a dimension being measured.
accuracy
measurement
precision
significant figure
75
Which of the following was a belief that matter was made of separate, discrete particles?
the continuous theory of matter
the law of multiple proportions
atomism
the law of definite proportion
76
What is the boiling point of water in Celsius
100 C
373.15 K
0 C
273.15 K
77
A rock weighs more than a piece of foam, even if the foam is bigger. What property of matter does this illustrate?
conductivity
ductility
density
malleability
78
Change 5.02 x 10^3 to standard notation.
5020
50200
502000
502
79
Which of the following is a type of quantitative data?
odor
shape
mass
texture
80
Which of the following is an example of a physical change?
a compound exploding
a chemical reacting violently with water
a metal being hammered into a sheet
a metal corroding in the presence of an acid
81
Which one is not a part of an atom?
atom
neutron
proton
joule
82
Significant figures apply only to __________ data.
measured
pure
defined
counted
83
Which law of thermodynamics states that entropy is always increasing?
first law of thermodynamics
second law of thermodynamics
thrid law of thermodynamics
84
What unit is used to measure both energy and work?
BTU
joule
Degree
horsepower
85
What rule is used to show how electrons would fill in?
electron address
heisenberg uncertainty principle
diagnol arrow rule
excited state
86
how likely matter is to catch fire
flammability
reactivity
density
conductivity
87
how likely a substance is to living things
toxicity
malleability
ductility
conductivity
88
Which of the following digits are considered significant in a measurement?
all estimated digits
all positive digits
all negative digits
all nonzero digits
89
The act of comparing an unknown quantity to a standard unit is known as __________.
derivation
graduation
dimension
measurement
90
has a spherical shape
p sublevel
s sublevel
d sublevel
f sublevel
91
If an atom gains an electron, the atom will have a ___________ charge.
negative
periodic
positive
neutral
92
Who was the greek philospher that referred to matter as being made of discrete particles?
Joseph Proust
Democritus
J. J. Thomson
John Dalton
93
Light is made up of massless particles called _________.
electrons
photons
waves
orbitals
94
dry ice turning into vapor at room tempearature
sublimation
vaporization
deposition
condensation
95
The human eye can detect wavelengths of light as short as 0.000 037 cm. What is this wavelength in nanometers?
3.7 x 10–12 nm
37 nm
370 nm
37 000 000 nm
96
can contain up to ten electrons
d sublevel
s sublevel
f sublevel
p sublevel
97
Which phase would be categorized by having no/very little particle attraction and a lot of kinetic enery.
gas
solid
liquid
plasma
98
A log burns, creating heat is example of __________.
both a physical change and a chemical change
neither a physical change nor a chemical change
a chemical change
a physical change
99
The freezing point of nitrogen is –210 °C. What is the temperature in kelvins?
-63 K
63 K
483 K
148 K
100
The wave-particle duality theory describes how an electron can act as both a particle and a(n) _________.
electron
proton
photon
wave

Chemistry Mid-Term Exam Flashcards | StudBud

Chemistry Mid-Term Exam

100 termsStudBud Administration221 plays

Imported from external platform

Flashcards100 cardsFPractice quizPHost liveL

Questions 100

Answers

1
When all the orbitals for an atom are combined, a roughly spherical region is produced around the atom called the _____.
energy sublevel
photon
principal quantum number
electron cloud
2
How many significant figures are in the measurement 4800 cm?
1
4
2
3
3
the ability of a material to transfer heat or electricity
conductivity
reactivity
flammability
density
4
How many significant figures are in the measurement 0.000 34 m?
6
2
3
5
5
What sublevel has a dumbbell shape?
f
s
d
p
6
What is the smallest particle that makes up an element and is capable of chemical interaction?
electron
atom
proton
neutron
7
How many principal quantum numbers are there?
7
5
3
1
8
How many atoms of sulfur are present in Al2(SO4)3?
2
6
4
3
9
Two different isotopes of a single element would have the same number of __________ but a different number of _________.
electrons; protons
protons; ions
protons; neutrons
neutrons; protons
10
What is something that we can used to identify if a chemical change has occured.
temperature change
gas being released
color change
all of the above
11
The type of sublevel found in all principal energy levels is the _____.
s sublevel
p sublevel
f sublevel
d sublevel
12
Which state of matter exists in stars?
liquid
solid
plasma
gas
13
How many atoms of oxygen (O) are there in a molecule of penicillin G (C16H18N2O4S)?
4
20
10
2
14
Information that consists of descriptions and not numerical values is called __________ data.
subjective
qualitative
deductive
quantitative
15
The measure of the dispersal of energy in a system is known as __________.
energy
enthalpy
entropy
16
butter placed on a hot pan turns inta a liquid
sublimation
melting
vaporization
freezing
17
the ability for matter to be turned into a wire
conductivity
malleability
toxicity
ductility
18
The d sublevel may contain up to _________ electrons.
14
2
6
10
19
Which law of thermodynamics states that energy cannot be created nor destroyed.
second law of thermodynamics
first law of thermodynamics
thrid law of thermodynamics
20
The mass of a crystal was measured on a balance to be 8 grams. This would be an example of __________ data.
quantitative
subjective
deductive
qualitative
21
boiling water evaporates into steam
condensation
vaporization
sublimation
deposition
22
Which of the following accurately describes the Bohr model?
Electrons are found inside and outside the nucleus.
Electrons exist in a series of distinct energy levels.
An electron can exist as both a particle and a wave.
Electrons are found in orbitals around the nucleus.
23
J. J. Thomson concluded that every atom contained small, __________ particles.
positively charged
negatively charged
neutrally charge
dense
24
contains only one orbital
f sublevel
p sublevel
s sublevel
d sublevel
25
What is the measurement of the average kinetic energy of all the particles within a substance.
heat
acoustic energy
toxicity
temperatures
26
What is the current atomic model?
quantum-mechanical model
Heisenberg model
bohr’s model
Broglie model
27
You measure products three times and get 4.12 g, 3.25 g, and 4.79 g. The actual mass is 2.25 g. Your measurements are
neither accurate nor precise
accurate but not precise
precise but not accurate
both accurate and precise
28
Which temperature scale CANNOT be used for scientific inquiry?
kelvin
fahrenheit
celsius
29
What does 25 500 g equal in kilograms?
2.55
255
25.5
2550
30
Who is credited with the discovery of the neutron?
Ernest Rutherford
Niels Bohr
Hans Geiger
James Chadwick
31
Chocolate milk is an example of what type of mixture?
heterogeneous
homogenous
simple
pure substances
32
on really cold days rain solidifies into snw
melting
freezing
vaporization
sublimation
33
holds the greatest amount of electrons
d sublevel
s sublevel
p sublevel
f sublevel
34
Which model the launches alpha particles towards a gold foil and seeing some pass through and other being deflected?
law of multiple proportions
plum pudding model
Rutherford’s model
Dalton’s model
35
Who came up with the a model where atoms are solid spheres of differing shape?
J. J. Thomson
Earnest Rutherford
James Chadwick
John Dalton
36
In the formula Mg(OH)2, the numeral 2 is called a __________.
superscript
base number
subscript
coefficient
37
Chemical and physical processes that absorb thermal energy are called __________ processes.
endothermic
exothermic
ectothermic
natural
38
The sum of the number of neutrons and the number of protons in an isotope represents the __________ of the isotope.
atomic mass
atomic mass unit
mass number
atomic number
39
The weighted averages of the isotopes of an element determine its __________.
mass number
atomic number
atomic weight
atomic mass
40
What is the ability to do work?
chemical change
energy
work
41
How many hydrogen atoms are in the chemical formula H2O?
2
4
1
3
42
What is the study of matter and the changes that it undergoes?
pure science
modeling
chemistry
applied science
43
the ability for matter to hammered into different shapes
conductivity
toxicity
malleability
ductility
44
The first step in the scientific model begins with an __________.
observation
data
experimentation
proof
45
What is the maximum number of electrons in a 3p orbital?
2
6
8
10
46
Perform the following operation: 7.491 m + 60.2 m + 1.002 24 m.
68.7 m
68.6 m
68.64 m
69 m
47
Sand and salt are mixed together. Which technique can be used to seperate them.
distillation
suspending
decanting
filtration
48
Pure water is a __________.
compound
polyatomic element
monatomic element
diatomic element
49
Perform the following operation: (26.9 m)(5.0 m).
130 m2
134.5 m2
1300 m2
1.34 m2
50
The kinetic-molecular theory is a model that describes the __________ of particles in matter.
movement
temperature
composition
mass
51
Sulfur has how many valence electrons?
4
8
6
2
52
What is the pattern for colored lines that was discovered while analyzing light produced by heated elements?
excited state
color spectrum
emission spectrum
ground state
53
What are the 3 major concepts of a Biblical worldview.
creation, flood, confusion
curse, fullfilment, affirmation
fall, curse, redemption
creation, fall, redemption
54
The fact that any sample of water contains 8 g of oxygen for every 1 g of hydrogen illustrates __________.
the continuous theory of matter
the table of elements
the law of definite proportion
atomism
55
dew on the grass in the morning is caused by
sublimation
condensation
deposition
vaporization
56
You measure the mass of a product to be 1.87 g. Theoretical calculations predict that you should have obtained 1.95 g
3.9%
12.1%
5.6%
4.1%
57
The number of protons in an atom’s nucleus is its __________.
atomic model
atomic number
atomic mass
nucleus
58
Oxygen (O2) is a __________.
monatomic element
diatomic element
diatomic element
compound
59
What scientist was responsible for the discovery of the electron?
James Chadwick
J. J. Thomson
Earnest Rutherford
John Dalton
60
gas turns directly into a solid
deposition
vaporization
sublimation
condensation
61
Which phase would be categorized by having more particle attraction that kinetic energy.
plasma
liquid
gas
solid
62
The extremely small and dense center of an atom.
proton
neutron
nucleus
electron
63
It indicates how repeatable a measurement is or how exactly one can make a measurement
precision
significant figure
measurement
accuracy
64
Who used cathod rays to discover the electron?
James Chadwick
J. J. Thomson
John Dalton
Earnest Rutherford
65
All matter is made up of tiny particles called what?
waves
atoms
rings
orbs
66
The experiment in which alpha particles were deflected by gold foil was conducted by __________.
James Chadwick
Ernest Rutherford
Wilhelm Röentgen
Werner Heisenberg
67
Which of the following statements shows a naturalistic worldview?
Scripture can account for the existence of every subject in creation
Science can ultimately explain everything we see in this world.
Humans are accountable for taking care of the world and the needs of people
The study of chemistry is useful to help us understand the created world.
68
Which form of matter has fast-moving and widely spaced particles?
gas
solid
plasma
liquid
69
how likely matter is to react with other substances
density
flammability
conductivity
reactivity
70
The measurement 0.005 006 10 m has how many significant figures?
6
8
5
3
71
If electrons occupy the same orbital, they must have opposite spins. This is stated by the __________.
Aufbau principle
law of definite composition
Pauli exclusion principle
Heisenberg uncertainty principle
72
the amount of matter that is packed into a specific volume
conductivity
reactivity
flammability
density
73
What are the four things that make up the electron address.
principal quantum number, sublevel, orbital, spin
energy level, direction, spin, mass
principal quantum number, distance, speed, mass
spin, distance, quantum number, sublevel
74
An evaluation of how close a measured value is to the expected or accepted value of a dimension being measured.
accuracy
measurement
precision
significant figure
75
Which of the following was a belief that matter was made of separate, discrete particles?
the continuous theory of matter
the law of multiple proportions
atomism
the law of definite proportion
76
What is the boiling point of water in Celsius
100 C
373.15 K
0 C
273.15 K
77
A rock weighs more than a piece of foam, even if the foam is bigger. What property of matter does this illustrate?
conductivity
ductility
density
malleability
78
Change 5.02 x 10^3 to standard notation.
5020
50200
502000
502
79
Which of the following is a type of quantitative data?
odor
shape
mass
texture
80
Which of the following is an example of a physical change?
a compound exploding
a chemical reacting violently with water
a metal being hammered into a sheet
a metal corroding in the presence of an acid
81
Which one is not a part of an atom?
atom
neutron
proton
joule
82
Significant figures apply only to __________ data.
measured
pure
defined
counted
83
Which law of thermodynamics states that entropy is always increasing?
first law of thermodynamics
second law of thermodynamics
thrid law of thermodynamics
84
What unit is used to measure both energy and work?
BTU
joule
Degree
horsepower
85
What rule is used to show how electrons would fill in?
electron address
heisenberg uncertainty principle
diagnol arrow rule
excited state
86
how likely matter is to catch fire
flammability
reactivity
density
conductivity
87
how likely a substance is to living things
toxicity
malleability
ductility
conductivity
88
Which of the following digits are considered significant in a measurement?
all estimated digits
all positive digits
all negative digits
all nonzero digits
89
The act of comparing an unknown quantity to a standard unit is known as __________.
derivation
graduation
dimension
measurement
90
has a spherical shape
p sublevel
s sublevel
d sublevel
f sublevel
91
If an atom gains an electron, the atom will have a ___________ charge.
negative
periodic
positive
neutral
92
Who was the greek philospher that referred to matter as being made of discrete particles?
Joseph Proust
Democritus
J. J. Thomson
John Dalton
93
Light is made up of massless particles called _________.
electrons
photons
waves
orbitals
94
dry ice turning into vapor at room tempearature
sublimation
vaporization
deposition
condensation
95
The human eye can detect wavelengths of light as short as 0.000 037 cm. What is this wavelength in nanometers?
3.7 x 10–12 nm
37 nm
370 nm
37 000 000 nm
96
can contain up to ten electrons
d sublevel
s sublevel
f sublevel
p sublevel
97
Which phase would be categorized by having no/very little particle attraction and a lot of kinetic enery.
gas
solid
liquid
plasma
98
A log burns, creating heat is example of __________.
both a physical change and a chemical change
neither a physical change nor a chemical change
a chemical change
a physical change
99
The freezing point of nitrogen is –210 °C. What is the temperature in kelvins?
-63 K
63 K
483 K
148 K
100
The wave-particle duality theory describes how an electron can act as both a particle and a(n) _________.
electron
proton
photon
wave