Half the distance between the nuclei of two identical Atoms

The quantum number that describes the direction of the spin of an electron:

Electron spin quantum number (s)

What did Aristotle believe about matter?

there are four basic elements of matter

What is unique about the electron configurations of representative elements?

their s and p sublevels are partially filled

What did Thomson use to make his discovery?

the cathode ray tube and magnets

Electron affinity is:

The energy absorbed or released in order to add an electron

Which of the following discoveries was NOT part of Rutherford's findings?

alpha particles have a positive charge

The mass of an electron is

very small compared to the proton

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1
How many significant figures are in the following number: 1000 mL = 1 L
unlimited
2
1
5
2
If the density of an object was 1.05 g/cm³ and the mass was 48.2 g, what is the volume?
0.02 cm3
17.8 cm3
45.9 cm3
50.61 cm3
3
The elements in Group 8A, with the exception of He, have which outer electron configuration?
s2p4
s2p6
s4p4
s2p8
4
The letter "p" in the symbol 4p³ indicates the _____?
Orbital shape
Spin of an electron
Energy level
Speed of the electron
5
Who discovered the proton?
Millikan
JJ Thomson
Goldstein
Chadwick
6
What statement is NOT a part of Dalton's Atomic Theory?
Atoms form compounds in simple whole number ratios
Atoms of the same element are identical
Atoms are combined, separated, and rearranged
Atoms are divisible
7
This scientist developed the first modern atomic theory.
John Dalton
Ernest Rutherford
Democritus
JJ Thomson
8
Atomic radius is:
The energy absorbed or released in order to add an electron
The max # of electrons in the outer distribution of the atom
Half the distance between the nuclei of two identical Atoms
The amount of energy required to remove an electron
9
The scientist who proposed the first experimental based atomic theory:
Dalton
Democritus
Thomson
Rutherford
10
How many neutrons does an atom of phosphorus have?
46
15
31
16
11
A horizontal row of elements is called a
Series
Group
Period
Family
12
Convert 56.3 calories to Joules.
235.6 Joules
13.5 Joules
13.4 Joules
235.5 Joules
13
The fact that hydrogen has one valence electron makes it similar to what family?
Halogen
Alkaline earth metal
Alkali metal
Noble gas
14
Transition metals in the fourth period fill the _____ orbital.
3p
4f
4s
3d
15
An isotope contains the same number of _____, but a different number of _____.
electrons, protons
quarks, mesons
tachyons, baryons
protons, neutrons
16
Put the following number in scientific notation: 0.00089
0.89 x 10-3
8.9 x 104
8.9 x 10-4
0.89 x 103
17
Who discovered the nucleus?
Thomson
Rutherford
Dalton
Millikan
18
Which subatomic particle is involved in a chemical reaction?
proton
neutron
electron
19
Which of the following is not a metric base unit most commonly used in chemistry?
kilogram
candela
mol
meter
20
If the mass of an object is 24.5 kg and the volume is 58.6 cm³, what is the density?
418.1 g/cm3
0.002 g/cm3
2.39 g/cm3
0.418 g/cm3
21
The quantum number that describes the direction of the spin of an electron:
Angular momentum quantum number (l)
Magnetic quantum number (m)
Electron spin quantum number (s)
Principal quantum number (n)
22
Calculate the percent error of the following: A_v= 58.9 E_v=49.3
16.3%
-16.3%
-19.5%
19.5%
23
Of the following elements, which one would have the lowest ionization energy?
Boron
Nitrogen
Lithium
Neon
24
Convert 117 grams to kilograms.
0.117 kg
117,000 kg
11.7 kg
0.0117 kg
25
Convert 48^oC to Kelvin.
321 K
-225 K
0.176 K
13,104 K
26
A vertical column of elements is called a
Period
Group
Formation
Series
27
The subatomic particle with a negative charge:
Proton
Neutron
Cyclotron
Electron
28
What did Aristotle believe about matter?
there are four basic elements of matter
matter does not exist
atoms are indivisible
atoms make up all matter
29
What is unique about the electron configurations of representative elements?
they have electrons present in the d sublevels
their s and p sublevels are completely filled
their s and p sublevels are partially filled
they have electrons present in the f sublevels
30
Which group includes Ca, Mg, and Ba?
alkaline earth family
noble gas family
alkali metal family
halogen family
31
The density of gasoline is 0.690 g/cm³. The volume is 234.5 L. What is the mass?
339,855 g
161,805 g
161.805 g
0.0029 g
32
Who described the model of the atom as having fixed, circular paths called orbitals?
Bohr
J.J. Thomson
Schrodinger
Dalton
33
How many significant figures are in the following number: 1600.0
4
2
5
3
34
What is the volume of a sugar cube if the dimensions are 2 cm long, 3 cm tall, and 4 cm wide?
9 cm3
10 cm3
25 cm3
24 cm3
35
In terms of accuracy, what do we measure...
consistent
close to the true value
how close a series of measurement are to each other
36
Who's model of the atom is represented by a tiny solid sphere?
Democritus
Thomson
Aristotle
Dalton
37
What did Thomson use to make his discovery?
lead box
the cathode ray tube and magnets
oil drops
alpha particles
38
Electron affinity is:
The energy absorbed or released in order to add an electron
The amount of energy required to remove an electron
Half the distance between the nuclei of two identical atoms
The max # of electrons in the outer distribution of an Atom
39
Round to the least precise measurement: 126.569 mL + 12.5 mL =
139 mL
139.1 mL
139.069 mL
139.07 mL
40
Who created the plum pudding model of the atom?
Thomson
Bohr
Rutherford
Dalton
41
Scientist who conducted the cathode ray tube experiment to discover the electron:
Bohr
Dalton
Rutherford
Thomson
42
Of the following elements, which one would have the largest radius?
Potassium
Sodium
Cesium
Hydrogen
43
What subatomic particle is positively charged and found in the nucleus?
neutron
proton
electron
beta particle
44
Which group on the periodic table is the most reactive and reacts highly with water?
noble gas family
alkali metal family
halogen family
alkaline earth metal family
45
What is the maximum number of electrons that can occupy the d sublevel?
14
6
2
10
46
Which of the following discoveries was NOT part of Rutherford's findings?
the electrons orbit the nucleus like planets orbit the sun
alpha particles have a positive charge
the atom has a small, dense center
the atom is mostly empty space
47
How does the energy of an electron change when it moves further from the nucleus?
It decreases
It stays the same
It increases
48
Most of the mass of the atom is located
in the protons
in the neutrons
in the nucleus
in the electron cloud
49
Round to the least precise measurement: 0.25 g x 12.6 g =
3 g2
3.2 g2
3.1 g2
3.15 g2
50
What is the electron configuration for sodium?
1s22p22s7
1s22s9
1s22s22p63s1
1s22s22p63s2
51
The mass of an electron is
very small compared to the proton
about equal to a neutron
almost the same as a proton
very large compared to the neutron
52
Scientist who proposed that electrons orbit the nucleus in the exact Orbits:
Dalton
Thomson
Bohr
Rutherford
53
Density of Cu is 8.96 g/cm³. A sheet of Cu is 10.3 cm, 6.1 cm, and 1.4 cm, what is the mass?
788.1 g
9.8 g
14.3 g
0.10 g
54
Which part of an atom cannot have its location accurately determined?
neutron
electron
proton
nucleus
55
James Chadwick discovered the
neutron
nucleus
proton
electron
56
The mass of a balloon is 4.56 g. The volume of the balloon is 34.2 cm³. What is the density?
0.133 g/cm3
4.58 g/cm3
7.5 g/cm3
156 g/cm3
57
Identify the following element from its configuration: 1s²2s²2p⁶3s²3p⁶4s²3d²
titanium
vanadium
calcium
lead
58
The spiracle area of probability that an electron occupies when orbiting the nucleus is the:
Nucleus
Orbital
Hemisphere
Aurora
59
Convert 23.7 picometers to nanometers.
23.700 nm
0.0237 nm
2.37 nm
23,700 nm
60
A student is playing darts. They hit the bull's-eye 3 times out of three. What are they?
only precise
both accurate and precise
only accurate
neither, accurate or precise
61
The quantum number that expresses the orientation of the orbital:
Angular momentum quantum number (l)
Principal quantum number (n)
Magnetic quantum number (m)
Electron spin quantum number (s)
62
The quantum number that expresses the shape of the orbital:
Angular movement in quantum numbers (l)
Principal quantum number (n)
Electron spin quantum number (s)
Magnetic quantum number (m)
63
If the density of an object is 0.304 g/cm³and the volume 67.8 cm³, what is the mass?
20.6 g
2.67 g
223 g
0.004 g
64
Put the following number in scientific notation: 123.4
12.34 x 101
1.234 x 102
12.34 x 10-1
1.234 x 10-2
65
What is the maximum number of electrons in the second principal energy level (2n²)?
18
8
32
2
66
Which of the following elements of the metalloid?
Arsenic
Selenium
Bromine
Potassium
67
How many significant figures are in the following number: 1600
1
3
4
2
68
The element iodine is a
Period 5 alkali metal
Period 5 halogen
Period 4 halogen
Period 5 transition metal
69
Solve the following: (4.5 x 10³) + (7.6 x 10⁴)
8.05 x 10-4
8.05 x 104
80500
8.05 x 107
70
Which of the following elements would have the smallest atomic radius?
Iodine
fluorine
Chlorine
Bromine
71
Which 2 subatomic particles are nearly the same size?
electrons and neutrons
protons and neutrons
protons and electrons
72
Our modern understanding of the atom was described by
Rutherford
Bohr
Dalton
Schrodinger
73
What is one of the non- SI metric units?
kilogram
Kelvin
liter
second
74
If the density of chloroform is 1.49 g/cm³, what is the volume of 25 g of chloroform?
16.8 cm3
29.7 cm3
0.06 cm3
37.25 cm3
75
Which sublevel is associated with a spherical shape?
f
p
s
d
76
Which orbital would contain electrons with the greatest amount of energy?
4s
1s
2p
3d
77
Which subatomic particle has the least mass?
proton
nucleus
electron
neutron
78
The scientist who conducted the gold foil experiment and discovered the nucleus:
Rutherford
Thomson
Democritus
Dalton
79
What scientists' portrait appears on the New Zealand $100 bill?
Schrodinger
Rutherford
Bohr
Chadwick
80
Greek philosopher who was the first to propose the idea of Atoms:
Democritus
Dalton
Thomson
Rutherford
81
JJ Thomson discovered the
electron
nucleus
proton
neutron
82
Which subatomic particle(s) were demonstrated in the plum pudding model?
neutrons and electrons
protons and electron
electrons
protons
83
Solve the following: (1.2 x 10⁶) / (5.6 x 10³)
0.21 x 103
2.1 x 10-1
2.1 x 109
2.1 x 102
84
Calculate the average atomic mass: 34.969 amu = 75.77% and 36.966 amu = 24.23%
35.45 amu
27.43 amu
36.46 amu
17.00 amu
85
The quantum number that describes the size and energy of an electron:
Electron spin quantum number (s)
Principal quantum number (n)
Magnetic quantum number (m)
Angular momentum quantum number (l)
86
What scientist experimented with alpha particles and gold foil?
Chadwick
Bohr
Dalton
Rutherford
87
The group of elements with the lowest electron affinity:
Transition metals
Halogens
Noble gases
Alkali metals
88
Solve the following: (15.6 x 10²) x (4.6 x 10⁴)
71.76
7.176 x 107
7.176 x 10-2
71.76 x 100
89
What is the electron configuration for carbon?
1s22s22p2
1s22s4
1s22s22p63s2
1s22p22s2
90
Which group is very unreactive?
alkaline earth metal family
halogen family
alkali metal family
noble gas family
91
Of the following elements, which one would have the highest ionization energy?
Sodium
Hydrogen
Cesium
Potassium
92
The alkali metals do not include:
Sodium
Calcium
Lithium
Rubidium
93
Convert 15.6 Joules to calories.
65.2 cal
65.3 cal
3.73 cal
3.72 cal
94
At the center of every atom lies a small, dense __________ that is positively charged.
cloud
nucleus
neutron
orbital
95
Which subatomic particle has a neutral charge?
electron
neutron
proton
nucleus
96
What particles form the nucleus of an atom?
Neutrons and electrons
Protons and neutrons
Electrons only
Protons and electrons
97
Who used the example of cutting bread to explain what he believed about matter?
Aristotle
Dalton
Thomson
Democritus
98
Ionization energy is:
The max # of electrons in the outer distribution of an atom
The energy absorbed or released in order to add an electron
The amount of energy required to remove an electron
Half the distance between the nuclei of two identical Atoms
99
The electron configuration represents an element in what category? 1s²2s²2p⁶3s²3p⁶4s²3d¹
transition metal
inner transition metal
group A element
noble gas
100
In this atomic model, the exact location of an electron cannot be predicted.
Quantum Mechanical Model
J.J. Thomson
Rutherford
Bohr
101
Round to the least precise measurement: 14.896 m³/ 1.2 m =
12.41 m2
12 m2
12.4 m2
12.413 m2
102
Who agreed with Democritus?
Aristotle
Dalton
Mendeleev
No one
103
The modern periodic table is arranged in order of increasing atomic ______?
Number
Charge
Mass
Radius
104
What is the maxium number of electrons that can fit in the fourth energy level?
8
32
28
18
105
Which of the following is true concerning the noble gases?
They belong to Group 18.
They are sometimes referred to as the inert gases.
all of the above
Except for He, their ending electron distribution is s2p6.
106
Of the following elements, which has the highest electron affinity?
Aluminum
Sodium
Sulfur
Chlorine
107
Daltons list of beliefs about atoms is called...
Dalton's Atomic Theory
Dalton's Documents
Dalton's Revelations
The Four Elements
108
Convert 525 K to Celsius.
252oC
798oC
1.92oC
143,325oC
109
If the mass of an object is 12.3 g and the volume is 40.3 cm³, what is the density?
0.31 g/cm3
26.7 g/cm3
495.69 g/cm3
3.28 g/cm3
110
What is the atomic number of bromine?
80
17
79.904
35
111
Round to the least precise measurement: 123.45 m - 104 m =
19.45 m
19 m
19.5 m
20 m
112
How many protons, neutrons, and electrons are in an atom of mercury?
10, 10, 10
12, 12, 12
80, 121, 80
74, 110, 74
113
What did Democritus believe about matter?
it was created by the sun gods
matter is made up of tiny indivisible particles called atoms
matter does not exist
there are 4 basic elements of matter
114
Who proved that atoms existed?
JJ Thomson
Democritus
Dalton
Aristotle
115
Which group forms a charge of +2 ions?
halogen family
alkaline earth metal family
alkali metal family
noble gas family
116
In terms of precision, what do we measure...
how close a series of measurements are to each other
how close to the true value
on point
117
Convert 18 dekaseconds to deciseconds.
0.18 ds
1,800 ds
0.018 ds
180 ds
118
A student is shooting paper into a trashcan. All 6 shots miss and land in 6 different places.
neither, accurate or precise
both, accurate and precise
only accurate
only precise
119
Using the periodic table, determine the number of neutrons in ⁶⁵Zn.
65
35
95
30
120
How many significant figures are in the following number: 0.0000123
8
7
3
5
121
Who conducted the oil drop experiment?
Millikan
Thomson
Rutherford
Chadwick
122
How many P, E, and N does an atom with atomic number 50 and a mass number of 120 contain?
50 protons, 50 electrons, and 70 neutrons
120 neutrons, 50 protons, and 70 electrons
70 neutrons, 70 protons, and 50 electrons
70 electrons, 50 protons, and 50 neutrons
123
Which subatomic particle is NOT found in the center of the atom?
nucleus
electrons
protons
neutrons

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