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Duplicate of Atomic Theory Scientists... Flashcards | StudBud
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Duplicate of Atomic Theory Scientists...
Duplicate of Atomic Theory Scientists...
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Scientists responsible for atomic theories
Flashcards
29 cards
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Questions
29
Answers
1
Thomson discovered which of the following particles?
neutron
electron
nucleus
proton
2
Radioactivity means….
the electrons in an atom have too much energy
An atom gives off radio waves.
None of the above
The nucleus of an atom is unstable and will eventually chage
3
Gamma-Decay is when...
Energy is released from the nucleus
4 neutrons are released
4 neutrons & 4 protons are released
4 protons are released
4
The atomic number is….
the number of neutrons plus protons
the number of neutrons in the nucleus
the number of protons in the nucleus
the number of electrons
5
Who discovered the neutron?
Millikan
Bohr
Rutherford
Chadwick
6
Who identified protons?
Thomson
Rutherford
Chadwick
Bohr
7
Who's experiment is this?
Chadwick
Thomson
Rutherford
Dalton
8
The image show three isotopes, which one is radioactive?
C
A
B
9
Who performed experiments with this to discover the e-?
Thomson
Rutherford
Bohr
Schrodinger
10
The majority of characteristics for elements are determined by their...
Tron
Neutrons
Protons
Electrons
11
Who proposed the Plum Pudding Model?
Chadwick
Dalton
Rutherford
Thomson
12
Which of the following statements regarding electric charge is
true
?
A pos-charge attracts a neg-charge and repels pos-charges
A pos-charge repels a neg-charge and attracts pos-charges
13
What did Rutherford discover with his gold foil experiment?
Atoms contain a central, positively charged nucleus.
Atoms were mostly made of positively charged material.
Plum Pudding Model
Electrons
14
The REAL "Father of Modern Chemistry"
aristotle
lavoisier
democritus
planck
15
Which part of Dalton's Atomic Theory has been disproved?
reactions rearrange elements
all matter is made up of atoms
all atoms of the same element are identical
atoms of elements combine to form compounds
16
Which of the following images is the most accurate model of the interior of an atom.
A
D
B
C
17
Who is this...father of modern chemistry?
Bohr
Dalton
Rutherford
Democritus
18
A spectroscope is...
An instrument that separates light into a spectrum.
An instrument that separates light into a bottle.
An instrument used to do science
An instrument that separates light for plants.
19
Who first said atoms were indivisible?
Dalton
Thomson
Rutherford
Democritus
20
All atoms of the same element have (choose one)
the same mass
the same number of protons
the same number of neutrons
all of the above
21
Walk the _____________
Catwalk
Plank
Boardwalk
Green Mile
22
Which of the following is not one of the elements proposed by Aristotle?
sound
earth
water
fire
23
Bohr's model of the atom is called the ___________________ model..
planetary
surrounding
orbiting
atomic
24
Beta-Decay is when a(n)...
energy waves are released
electron is ejected
proton is ejected
neutron is ejected
25
Alpha-decay is when the nucleus ejects...
2 protons & 2 electrons
2 electrons & 2 protons
2 protons & 2 neutrons
2 electrons
26
The four forces of nature are...
Weak force, Gravity, Electromagnetism, and Strong force
Strong force, Gravity, Magnetism, and Weak force
Gravity, Sound, Electromagnetism, and Strong nuclear force
Gravity, Sound, Electromagnetism, and Strong force
27
A spectral line...
a bright colored line in a spectroscope
a bright colored line
a bright colored line that appears on a paper
a bright colored line you see when you close your eyes
28
Pioneers for researching radioactivity......
lavoisier
currie
millikan
heisenberg
29
Who developed the 1st Modern Atomic Theory?
Dalton
Democritus
Aristotle
Bohr
