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Topic 2 Atomic Structure P1 Flashcards | StudBud
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Topic 2 Atomic Structure P1
Topic 2 Atomic Structure P1
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Chem (1819)
Flashcards
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Questions
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Answers
1
All atoms of a given element have the same
mass
# of protons
# of neutrons
density
2
If an element has 29 protons and a mass of 65amu , how many neutrons does it have and what is the isotope?
29 neutrons / Zn-65
29 neutrons / Cu-65
36 neutrons / Zn-65
36 neutrons / Cu-65
3
Rutherford's co-worker, James Chadwick is credited with the discovery of ...........
neutron
mass of an electron
electron
proton
4
Of the following, the heaviest and largest subatomic particle is the
alpha particle
neutron
electron
proton
5
J J Thomson in addition to discovering the electron determined what else with cathode tube.
neutrons
nucleus
charge to mass ratio
protons
6
The gold foil experiment was performed in Rutherford's lab and determined
the basis for Thomson's model of the atom
the law of multiple proportions
the atom was made mostly of empty space
confirmed the plum pudding mode of the atom
7
Isotopes of elements contain......
same neutrons different protons
different electrons same neutrons
same protons same electrons
same electrons same neutrons
8
The mass of a neutron is approximately equal to
the total of all subatomic particles
the total mass of the atom
1/1840 of an electron
the mass of a proton
9
When an atom emits radiation it will continue until it ........
reaches stability
has no more mass
there is nothing left
element is consumed
10
Which atom has the largest number of neutrons?.
nitrogen - 14
carbon - 14
fluorine - 19
oxygen - 16
11
What elements are liquid at 20
0
C?
He , H2
Hg, Ne
Hg, Br
Hg, H2
12
Kr - 84 has how many protons and neutrons?
83, 83
83, 48
36, 48
48, 36
13
The periodic table is arranged by its
periodicity
physical characteristics
atomic mass
atomic number
14
Robert Millikan is credited with the discovery of .........
mass of electron
mass of neutron
proton
electron
15
All atoms carry what kind of charge?
-1
0
+2
+1
16
Dalton's atomic theory has been modified to show .......
atoms are divisible
Matter is not composed of extremely small particles
different atoms do not combine in simple whole number ratios
In a chemical reaction, atoms are not separated.
17
To determine the number of neutrons you need the following.........
electrons & protons
mass & atomic number
nucleons
amu & nucleons
18
Cathode rays are streams of
electrons
neutrons
positrons
atoms
19
Cathode rays are deflected towards the positively charge plate because
because they are positively charged
they are neutrally charged particles
they are not negatively charged
they are negatively charged particle
20
What element / atom contains NO neutrons?
Na
H
He
Cl
21
In the nucleus of an atom Bi-210, also written as
210
83
Bi, there are a total of how many neutrons and protons?
127 neutrons and 83 protons
83 neutrons and 127 protons
210 neutrons and 83 protons
83 neutrons and 210 protons
22
Cl-35 has what mass, atomic number, protons electrons, & neutrons
35, 17, 18, 18, 18
35, 18, 18, 17, 18
34, 17, 17, 18, 18
35, 17, 17, 17, 18
23
Which isotope has 54 protons in an atom?
Xe - 131
Sc - 45
Mo - 96
Nb - 93
24
Who is credited with current arrangement of the periodic table
Mosley
Bohr
Rutherford
Chadwick
25
A reaction that involves a changes in an atom's nucleus is.....
radiation
radioactivity
nuclear reaction
gamma radiation
