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Atomic Theorists/Atom Math Flashcards | StudBud
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Atomic Theorists/Atom Math
Who discovered the presence of the atom's nucleus?
Who discovered the nucleus?
Atomic Theorists/Atom Math
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1
Who discovered the nucleus?
Rutherford
Democritus
Thomson
Dalton
2
Who discovered the presence of the atom's nucleus?
Ernest Rutherford
J J Thomson
James Chadwick
Erwin Schrodinger
3
Which of the following best describes the Heisenberg Uncertainty Principle?
Light behaves like a particle and a wave
You cannot measure an object without disturbing it
It is impossible to know both exact position and velocity
The shorter the wavelength, the higher the frequency
4
The atomic number is equal to the number of
neutrons
protons
protons plus neutrons
5
He's known as the Father of the Atomic Theory
Dalton
Schrodinger
Heisenberg
Rutherford
6
Who discovered this model of the atom?
John Dalton
Ernest Rutherford
Erwin Schrodinger
Niels Bohr
7
The mass number of an atom is equal to the number of
neutrons
protons
protons plus neutrons
8
Location for each: proton, neutron, electron
Electron cloud, nucleus, nucleus
Electrons cloud, electron cloud, nucleus
Nucleus, nucleus, electron cloud
Nucleus, electron cloud, electron cloud
9
Who discovered this model of the atom?
Democritus
John Dalton
Niels Bohr
Ernest Rutherford
10
Who discovered this model of the atom?
Niels Bohr
Ernest Rutherford
J J Thomson
Democritus
11
Phosphorus has an average atomic mass of 30.974. Predict the most abundant isotope:
P-30
O-15
P-31
P-32
12
Who discovered the charge of an electron?
Robert Millikan
James Chadwick
Ernest Rutherford
J J Thomson
13
An atom is:
Three dimensional region around nucleus
Smallest particle of an element that retains properties
The ability to attract electrons
Set of wavelengths of EM radiation emitted by excited atoms
14
Alternative versions of atoms with differing numbers of neutrons are called:
Isotopes
Metals
Ions
Radioactivity
15
How many neutrons are in As-77
77
33
44
16
Who was the first to state matter was composed of atomos?
J J Thomson
Democritus
James Chadwick
John Dalton
17
How many electrons are in Br-73
73
35
38
18
He stated it's impossible to know both the position and velocity of an electron.....
Heisenberg
Dalton
Rutherford
Schrodinger
19
Atoms have a neutral charge due to the protons in the nucleus equal to the number of:
Neutrons
Electrons
Protons
Atoms
20
How many protons, neutrons, electrons are in Kr-85? (order: protons, neutrons, electrons)
36, 36, 49
36, 49, 36
36, 85, 36
49, 36, 49
21
Which two subatomic particles make up the majority of the mass of the atom?
Electrons only
Protons and neutrons
Protons and electrons
Neutrons and electrons
22
Who discovered the electron?
Dalton
Faraday
Franklin
Thomson
