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Atomic Structure & Nuclear Chemistry Review Flashcards | StudBud
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Atomic Structure & Nuclear Chemistry Review
Atomic Structure & Nuclear Chemistry Review
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1
Which of the following has a greater average atomic mass? Which has more protons?
cobalt; cobalt
nickel; cobalt
cobalt; nickel
nickel; nickel
2
The electrons in an atom exist in a _____ around a(n) _______.
cloud; nucleus
plum pudding; nucleus
cloud; atom
plum pudding; atom
3
The notations below indicate several ___ of Mercury, which differ only in their number of ___.
isotopes; electrons
isotopes; protons
isotopes; neutrons
4
Which of the following correctly describes the charge of subatomic particles?
Electrons are negative.
Protons are negative.
Electrons are positive.
Neutrons are negative.
5
Two atoms of the same element have different mass numbers. This makes them different
isotopes
particles
decay particles
elements
6
Which of the following represents an alpha particle?
C
B
A
None of them.
7
On periodic table block below, which letter is associated with atomic number?
C
B
A
D
8
What number should go in the top box, and what number should go in the lower box?
228; 90
236; 88
228; 88
236; 92
9
How many neutrons are in an atom of mercury if the mass number of the atom is 202?
121
122
120.59
120
10
It two atoms have the same atomic number, which of the following must be true?
Two atoms can't have the same mass number.
The atoms have the same mass number.
The atoms must be of the same element.
The two atoms are not necessarily the same element.
11
When a neutron collides with an atom and causes the reaction shown below, it is called a
fusion reaction
fission reaction
chemical reaction
none of these
12
One of Rutherford's contributions to atomic theory was the discovery of the _ , found using _.
nucleus; cathode ray tube
electron; gold foil experiment
electron; cathode ray tube
nucleus; gold foil experiment
13
What process is shown in the diagram below, in which two hydrogen atoms are forced together?
fusion reaction
none of these
chemical reaction
fission reaction
14
How many protons are in an atom of mercury if the mass number of the atom is 202?
202
80
201
122
15
Which type of nuclear reaction is used by nuclear reactors to create electrical power?
fusion
fission
16
If a neutron breaks down into an electron and a proton, it is a(n) __ particle.
beta
gamma
none of these
alpha
17
The sun produces all of its energy via
fission reactions
chemical reactions
fusion reactions
18
Carbon's avg atomic mass is 12.011. Which of its isotopes has the greatest relative abundance?
C-14
C-12
C-13
19
One of Thomson's contributions to atomic theory was the discovery of the _ , found using _.
nucleus; cathode ray tube
nucleus; gold foil experiment
electron; gold foil experiment
electron; cathode ray tube
20
Atoms are mostly empty space.
False
True
21
Which of the following represents a gamma particle?
None of them.
C
B
A
22
Which of the following correctly describes the charge of subatomic particles?
Neutrons are negative.
Neutrons are postiive.
Electrons are positive.
Protons are positive.
23
How many protons are in an atom represented by the notation below?
42
78
114
36
24
Which of the types of nuclear radiation has positive charge?
alpha
gamma
all of them have charge
beta
25
Which of the types of nuclear radiation has negative charge?
gamma
all of them have charge
beta
alpha
26
On periodic table block below, which letter is associated with average atomic mass?
D
B
C
A
27
Which of the following correctly describes the charge of subatomic particles?
Electrons are positive.
Neutrons are postiive.
Protons are negative.
Neutrons have no charge.
28
What is the ratio of the mass of an electron relative to the mass of a proton or neutron?
1:2
2000:1
1:1
1:2000
29
Which of the following represents a beta particle?
A
B
C
None of them.
30
A change in the identity of an element means
Electrons have been lost.
A chemical reaction has occurred.
a nuclear reaction has occurred.
new compounds have been formed.
31
Which of the types of nuclear radiation has no charge associated with it?
alpha
all of them have charge
beta
gamma
32
Where are electrons found in atoms?
Inside the nucleus
everywhere
outside the nucleus
33
Which of the following represents an ion?
B only
B and C
A and B
C only
34
If a radioactive decay particle has two protons and two neutrons, it is a(n) ___ particle.
beta
none of these
gamma
alpha