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Chapter 4 Atomic Structure Flashcards | StudBud
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Chapter 4 Atomic Structure
Chapter 4 Atomic Structure
30 terms
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A chemistry quiz to introduce basic atomic models and atomic structure.
Flashcards
30 cards
F
Practice quiz
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Host live
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Questions
30
Answers
1
The most accepted current atomic model is the __________.
Plum pudding
Tiny indivisible spheres
Electron cloud
Solar system
2
He discovered electrons.
Rutherford
Thomson
Millikan
Chadwick
3
The mass of electrons is __________.
1/1840 amu
1/12 the mass of carbon-12
1 amu
not measurable
4
In the gold foil experiment, the positively charged alpha particles were deflected by _____.
the nucleus
neutrons
electrons
plum pudding
5
He discovered the nucleus.
Chadwick
Millikan
Thomson
Rutherford
6
The number of protons in the nucleus is the _______________.
atomic number
atomic mass unit
atomic mass
mass number
7
He did the gold foil experiment, using alpha particles and found most went straight through.
Rutherford
Millikan
Chadwick
Thomson
8
Isotopes of the same element have the same number of __________.
protons
neutrons
electrons
nucleons
9
He discovered neutrons.
Rutherford
Millikan
Thomson.
Chadwick
10
1/12 the mass of carbon-12 is __________.
atomic mass
mass number
atomic mass unit
atomic number
11
The cathode ray of electrons was attracted to a ___________ charged magnet.
negatively
positively
neutrally
oppositionally
12
Determine the number of neutrons in Ba-138.
82
137.33
138
56
13
Electrons are negatively charged and are the most massive subatomic particle.
false
true
14
The nucleus of an atom is _______________.
negatively charged and not dense
positively charged and not dense
negatively charged and very dense
positively charged and very dense
15
He did the cathode ray tube experiment.
Thomson
Millikan
Dalton
Rutherford
16
Protons, electrons and neutrons have the same mass.
false
true
17
The nucleus contains _______________.
protons
electrons
protons and electrons
protons and neutrons
18
He determined the charge and mass of an electron.
Rutherford
Milllikan
Thomson
Bohr
19
In
24
Mg the
24
represents the __________.
atomic number
mass number
atomic mass unit
atomic mass
20
He discovered protons.
Chadwick
Thomson
Rutherford
Millikan
21
He did the Oil Drop experiment.
Bohr
Milllikan
Thomson
Rutherford
22
The mass of protons is __________.
1/12 the mass of carbon-12
not measurable
1 amu
1/1840 amu
23
He proposed a model in which electrons orbit the nucleus like planets orbit the sun.
Rutherford
Dalton
Bohr
Chadwick
24
He first proposed that atoms are indivisible 'atomos.'
Galileo
Aristotle
Athenos
Democritus
25
The number of protons and neutrons in the nucleus is the _______________.
mass number
atomic mass unit
atomic number
atomic mass
26
Isotopes of the same element have different number of _______________.
neutrons
energy levels
electrons
protons
27
He did experiments to propose the first modern Atomic Theory.
Dalton
Democritus
Thomson
Rutherford
28
His model is known as the "plum pudding" model.
Dalton
Millikan
Thomson
Rutherford
29
The -14 in carbon-14 is the __________.
atomic mass unit
atomic mass
atomic number
mass number
30
Number of neutrons = ____________________
mass number
atomic number
atomic number - mass number
mass number - atomic number
