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Atomic Structure Review
Atomic Structure Review
60 terms
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Chemistry test review for atomic structure with element symbols and atomic models
Flashcards
60 cards
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Questions
60
Answers
1
Isotopes of the same element have different _____.
numbers of protons
mass numbers
atomic numbers
numbers of neutrons
2
All atoms of the same element have the same ____.
mass numbers
number of protons
mass
number of neutrons
3
How is the number of neutrons in the nucleus of an atom calculated?
Add the mass number to the number of electrons.
Subtrace the number of protons from the mass number.
Add the numbrons and protons together.er of elect
Subtract the number of electrons from the number of protons.
4
What is the symbol for Iron?
F
Fe
Ir
I
5
The atomic number of an element is the total number of which particles in the nucleus?
protons
electrons
protons and electrons
neutrons
6
What number was this model developed in?
2
3
4
5
7
How many neutrons does potassium have?
20
16
15
19
8
Which of the following is NOT true?
The nucleus of an atom has a positive charge.
Atms of the same element can have different masses. o
Atoms of isotopes of an elemnt have differnt # of p.
Atoms are mostly empty space.
9
The total number of protons and neutrons in the nucleus of an atom.
ion
mass number
isotope
atomic number
10
What order was this model developed?
5
2
4
3
11
The atomic mass of an element is the ____.
ratio of proton to neutrons
total mass of the isotope of that element
total number of subatomic particles in its nucleus
mass and relative abundance of each isotope of that element
12
The sum of the protons and neutrons in the nucleus in an atom equals the ____.
mass number
atomic number
atomic mass
nucleus number
13
An element has an atomic number of 76. The protons & electrons in a neutral atom are ____.
38 protons and 38 electrons
152 protons and 76 electrons
76 protons and 76 electrons
76 protons and 0 electrons
14
Which of the following is necessary to calculate the atomic mass of an element?
the masses of each isotope of the element
the relative masses of the element's electrons
the atomic mass of carbon-12
the atomic number of the element
15
What is the symbol for Lead?
Pd
La
Pb
Le
16
How many electrons does an atom of bromine have?
56
4
35
5
17
What is the symbol for Silver?
Au
Si
Ag
S
18
What is the symbol for Antimony?
Sg
As
At
Sb
19
What element has 20 protons?
chlorine
carbon
cadmium
calcium
20
What element's symbol is Co?
Copper
Cobalt
Chlorine
Chromium
21
Isotopes of the same element have different ____.
mass numbers
positions on the periodic table
chemical behavior
atomic numbers
22
Which of the following is the symbol of the element, the number of protons & electrons correct?
In, 49 protons, 49 electrons
F, 19 protons, 19 electrons
Zn, 30 protons, 60 electrons
Cs, 55 protons, 132.9 electrons
23
What order was this model developed in?
3
5
4
2
24
What is the symbol for Tin?
Ti
Tm
Sb
Sn
25
Who lived from 460 B.C. - 370 B.C. and was among the first to suggest the idea of atoms?
Democritus
Thomson
Dalton
Aristotle
26
Dalton's atomic theory included which idea?
Atoms of different elements always combine one to one.
Atoms of the same element are always identical.
Individual atoms can be seen with a microscope.
All atoms of all elements are the same.
27
What number was this model of the atom developed in?
4
1
3
2
28
What is the symbol for Mercury?
Hg
Au
Ag
Pb
29
The nucleus of the atom is ____.
negatively charged <br>and has a high density.
positively charged and has more protons than neutrons.
negatively charged and has a low density.
the central core and composed of protons and neutrons.
30
The number of protons in the nucleus of an element.
atomic number
mass number
ion
isotope
31
What does the number 84 in krypton-84 represent?
the mass number
the sum of protons and electrons
twice the number of protons
the atomic number
32
How many protons, electrons and neutrons does an atom with atomic number 50 and mass number 125
120 neutrons, 50 protons, 75 electronso
75 electrons, 50 protons, 50 neutrons
70 neutrons, 75 protons, 50 electrons
50 protons, 50 electrons, 75 neutrons
33
Using the periodic table, detetermine the number of neutrons in O-16.
16
4
8
24
34
The smallest particle of an element that retains the properties of that element.
atom
neutron
proton
electron
35
What is the symbol for Sodium?
S
N
Na
Sn
36
What is the symbol for Platinum?
Pl
Pt
Pu
Pa
37
A positively charged subatomic particle.
proton
electron
atom
neutron
38
A negatively charged subatomic particle.
proton
electron
atom
neutron
39
Atoms with the same number of protons, but different numbers of neutrons in the nucleus.
ion
mass number
atomic number
isotope
40
How many protons does manganese have?
30
24
12
25
41
Which model of the atom is this?
Thomson
Modern
Bohr
Dalton
42
Which model of the atom is this?
Rutherford
Bohr
Thomson
Dalton
43
Which model of the atom is this?
Dalton
Modern
Rutherford
Thomson
44
Which of the following is NOT a part of Dalton's atomic theory?
Atoms of the same element are identical.
Atoms that combine do so in simple whole number ratios.
All elements are composed of atoms.
Atoms are always in motion.
45
What is the symbol for Copper?
C
Cu
Co
Cr
46
What order was this model developed ?
3
1
2
4
47
All atoms are ____.
negatively charged, with more electrons than protons
Neutral, with protons equal to electrons equal to neutrons.
positively charged, with more protons than electrons
neutral, with the protons equal to electrons
48
The mass number of an element is equal to ____.
the total number of electrons in the nucleus
a constant number for the lighter elements
the total number of protons and neutrons in the nucleus
less than twice the atomic number
49
What element's symbol is S?
sulfur
silver
silicon
sodium
50
Which of the following statements is NOT true?
The nucleus of an atom is positively charged.
Neutrons are located in the nucleus of an atom.
Protons have a positive charge.
Electrons are negatively charged and have a mass of 1 amu.
51
The particles that are found in the nucleus of an atom are ____.
protons and neutrons
Neutrons and electrons
electrons only
protons and electrons
52
Which model of the atom is this?
Daltoohrn
Bohr
Thomson
Rutherford
53
Which model of the atom is this?
Thomson
Bohr
Modern
Dalton
54
Which of the following equals one atomic mass unit?
the mass of one electron
the mass of one helium-4 atom
one-twelfth the mass of one carbon-12 atom
the mass of one carbon-12 atom
55
What is the symbol for Tungsten?
Te
U
Tb
W
56
What unit is used to measure weighted average atomic mass?
angstrom
amu
gram
nanogram
57
What is the symbol for Radium?
Rb
Rn
Rm
Ra
58
A subatomic particle with no charge.
neutron
atom
proton
electron
59
Which of the following was originally a tenet of Dalton's atomic theory, but had to be revised?
Atoms are tiny indivisible particles.
Atoms of different elements combine in simple whole numbers.
Compounds are mde by combining atoms.
Atoms of the same element are identical.
60
What element's symbol is C?
cobalt
chlorine
calcium
carbon
