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History of the Atom and Nuclear Chem Flashcards | StudBud
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History of the Atom and Nuclear Chem
History of the Atom and Nuclear Chem
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A #chemistry #quiz over the #history of #atoms.
Flashcards
32 cards
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Practice quiz
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Questions
32
Answers
1
The % abundance for U-234 is 0.01%, U-235 is 0.71%, U-238 is 99.28%. What is the avg. mass?
235.67
236.35
238.12
237.98
2
What is the Modern Atomic Theory?
Atoms can have different masses/Electrons are found in cloud
All matter is made up of atoms(protons neutrons & electrons)
All of the Above
Atoms of an element differ from another's/Combine in ratios
3
An alpha particle has what charge?
negative
positive
no idea because no one said it
neutral
4
How did Niels Bohr's model differ from Rutherford's?
neutrons go around the nucleus
Electrons were inside the nucleus
Protons are in the nucleus
Electrons were on fixed paths.
5
Who discovered the proton?
Rutherford
Bohr
Chadwick
Goldstein
6
What did Ernest Rutherford discover in atoms?
Nucleus
Electrons
Neutrons
Protons
7
How did he Thomson discover the electron?
Cathode Ray Tube
Barometer
Canal Ray Tube
Balance Scale
8
What did James Chadwick discover?
Proton
Nucleus
Electron
Neutron
9
What were the points of Dalton's Atomic Theory?
All of the Above
All matter is composed of atoms/Can't be created & destroyed
Atoms of an element are identical/Combine in ratios
Each element has different atoms/can combine or be separated
10
Which of the following was originally a part of Dalton's atomic theory, but is no longer true?
Compounds are made by combining atoms.
Atoms of different elements are different
Atoms of the same element are the same.
Atoms are tiny indivisible particles.
11
What did J.J. Thomson's atom model look like?
Plum Pudding
A Nucleus Surrounded by Electrons
A refreshing watermelon
Planets orbiting the Sun
12
How many
NEUTRONS
does
COPPER-64
have?
29
63.5
35
64
13
What does Rutherford's model look like?
a nucleus made up of protons only
electrons randomly place around the nucleus
Triangle and Circle
a nucleus made up of protons and neutrons
14
Iodine-131 has a half life of 8 days. What fraction would remain at the end of 32 days?
0.125
50%
0.0625
0.25
15
Who discovered the electron?
J.J. Thomson
James Chadwick
Eugene Goldstein
Ernest Rutherford
16
Who was the major pioneer of the field of "Quantum Mechanics"?
de Broglie
Bohr
Schrodinger
Heisenberg
17
Who came up with the uncertainty principle of electrons?
Heisenberg
de Broglie
Rutherford
Schrodinger
18
How many
ELECTRONS
does
neutral
COPPER
have?
63.5
35
29
64
19
Which choice or choices are examples of beta decay?
1
4
3
2
20
Who discovered the
charge
of an electron?
Millikan
Thomson
Schodinger
Bohr
21
Who was the Greek philosopher who introduced the idea of the atom?
Socrates
Democritus
Plato
Aristotle
22
The quantum mechanical or wave model of the atom tells the
nucleus is in the middle
probability of finding an electron in a certain position.
exact path of an electron around the nucleus.
story according of Bohr
23
Which subatomic particle has a negative charge?
megatron
electron
proton
neutron
24
How did Rutherford discover the protons and nucleus?
Plum pudding
Gold foil experiment
Canal ray tube
Cathode ray tube
25
Which type of radiation does not produce a particle?
delta
gamma
alpha
beta
26
Atoms that have the same number of protons, but different number of neutrons are called?
isotopes
ions
different elements
charges
27
How many
PROTONS
does
COPPER
have?
35
63.5
29
64
28
What element would be produced from the
alpha
decay of Platinum - 175
Gold
no change
Iridium
Osmium
29
What element has 32
protons
?
Sulfur
Arsenic
Carbon
Germanium
30
Who performed the "oil drop experiment"?
Bohr
Schrodinger
Rutherford
Millikan
31
Who said matter behaves like waves?
Schrodinger
Bohr
JJ Thomson
Einstein
32
which subatomic particle(s) are found in the nucleus?
protons, neutrons & electrons
protons & neutrons
protons & electrons
neutrons & electrons
