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College Prep Atomic Structure Flashcards | StudBud
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College Prep Atomic Structure
College Prep Atomic Structure
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#Chemistry #review
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
What is the mass number of potassium?
19
40
39
160
2
How many neutrons are in Chlorine-37?
37
17
35
20
3
How many neutrons are in uranium-235?
92
143
145
235
4
What is the symbol for the element tin with the correct number of protons?
Sb-49
Ti-22
Sn-50
Tn-50
5
Isotopes differ because their atoms contain different numbers of:
Nuclei
Neutrons
Electrons
Protons
6
How many neutrons are in carbon-14?
8
6
12
14
7
What is the correct (in order) set of the missing information from the table?
Atomic #=27, # of protons=13, Mass #=13
Atomic #=15, # of protons=13, Mass #=29
Atomic #=15, # of protons=14, Mass #=28
Atomic #=13, # of protons=13, Mass #=27
8
What is the molar mass of Copper(I) Oxide? Formula Cu
2
O
143.1 g/mol
159.1 g.mol
95.55 g/mol
79.55 g/mol
9
What is the number of protons in Chlorine-37?
35
17
37
18
10
The sum of the protons and neutrons is equal to the:
number of electrons
atomic mass
atomic number
mass number
11
The Law of Conservation of Mass States:
All compounds contain the same ratio of elements.
Mass cannot be created or destroyed in ordinary changes
12
What is the correct name for the isotope of copper that contains 29 protons and 35 neutrons?
Copper-29
Copper-6
Copper-35
Copper-64
13
How many protons are in a calcium atom?
20
40
6
12
14
What is the name of the element with the chemical symbol Ag?
Aluminum
Silver
Arsenic
Argon
15
The proton is assigned a mass of approximately what?
1.67 x 10-24
1
2
1/2000
16
What is the only element whose atom has NO neutrons?
Uranium-235
Hydrogen-1
Carbon-13
Helium-4
17
What is the chemical symbol for the element Tungsten, with the correct number of protons?
Tu-74
W-74
Sn-50
Tn-47
18
As the mass number of an element’s isotopes increases, the number of protons
remains the same.
decreases.
doubles each time the mass number increases.
increases.
19
What is the chemical formula for baking soda?
NaHCO3 Sodium Bicarbonate
H2O Dihydrogen Monoxide
HC2H3O2 Acetic Acid
CO2 Carbon Dioxide
20
Which arrow points to the electron?
B
C
A
D
21
How can you tell that the following are isotopes of each other?
They all have the blue parts
They all have the same mass number
They all have the same number of protons
They all have the same number of neutrons
22
Which arrow points to the Proton?
A
D
B
C
23
In a neutral atom, which subatomic particles must be present in equal amounts?
protons and neutrons
protons and electrons
neutrons and electrons
24
Where is most of the mass in an atom located?
outside of the atom
in the rings
in the nucleus
25
Isotopes of the same element have different mass numbers.
False
True
26
What is the mass number for the following atom: 9 protons, 10 neutrons, and 9 electrons?
28
9
19
10
27
Which of the following can NOT be identified using the atomic number of an element?
number of electrons in a neutral atom
number of neutrons
number of protons
identity of the element
28
Which arrow points to the nucleus?
C
A
B
D
29
How many protons does an atom of Einsteinium contain?
2
99
68
78
30
Isotopes of the same element have different atomic numbers.
True
False
