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Atomic Theory Flashcards | StudBud
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Atomic Theory
Atomic Theory
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#Chemistry #English
Flashcards
12 cards
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Answers
1
What is the meaning of the word "atom"?
invisible
hard particles
not able to be divided
dividable
2
atoms with the same number of protons but different numbers of neutrons are:
isotopes
neutrons
relative abundance
protons
3
a positively charged subatomic particle is:
element number
neutron
Mass number
proton
4
Which scientist, using the gold-foil experiment, isolated the nucleus in 1911?
Robert Millikan
Niels Bohr
Ernest Rutherford
J.J Thomson
5
Who introduced what we know as the quantum theory?
Otto Hahn
Schrodinger
Max Planck
Murray Gell
6
What did Rutherford believe was in the center of an atom?
a particle
a proton
an electron
a nucleus
7
J.J. Thomson proved that cathode rays were beams of _____.
electrons
atoms
oil droplets
Alpha particles
8
Where are electrons likely to be found?
in definite paths
in electron clouds
mixed throughout an atom
in the nucleus
9
Who created the "Planetary Model" of the atom?
Ernest Rutherford
Niels Bohr
James Chadwick
William Crookes
10
What is the smallest particle into which an element can be divided?
proton
atom
neutron
electon
11
Who proposed this model of an atom?
Thomson
Democritus
Bohr
Rutherford
12
Who was the first philosopher to use the term atom?
Plato
Democritus
Socrates
Aristotle
