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Chapter 4 Atomic Structure C Flashcards | StudBud
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Chapter 4 Atomic Structure C
Chapter 4 Atomic Structure C
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History of Atomic Theory + atomic structure
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
Electrons were discovered
all of these
using a cathode ray
in a darkened lab
by accident
2
An element's position on the periodic table is determined by its
name
symbol
atomic number
date of discovery
3
The atomic number tells you
the number of protons
neither of these
the number of electrons
both of these
4
The subatomic particle with no charge
proton
electron
none of these
neutron
5
How many electrons does this element have?
1
1.008
0.008
2
6
Changing the number of neutrons has which effect on the overall charge of the atom?
Makes it negative
causes no change
Makes it radioactive
Makes it positve
7
The subatomic particle with a positive charge
neutron
proton
electron
all of these
8
Democritus theorized that atoms could not be
divided
created
all of these
destroyed
9
The smallest particle of an element that retains all the properties of that element
neutron
atom
matter
proton
10
What is the atomic mass for this element?
H
All of these
1.008
1
11
How many protons does this element have?
35.39
30
65.39
1,903
12
The two letters in each box on the periodic table are each element's
Name
Initials
Symbol
Classification
13
The first person to propose atomic theory was
Darwin
Sophicles
Democritus
Dalton
14
An isotope has ______________ number of protons and ____________ number of neutrons
the same; a different
the same; the same
a different; the same
a different; a different
15
How many protons are in this element?
12.011
6
12
0.011
16
Atomic mass is the weighted mass of
none of these
the protons of an element
the isotopes of an element
the neutrons of an element
17
The subatomic particle with a negative charge
megatron
electron
neutron
proton
18
What is the atomic number of this element
Zn
65.39
30
35.39
19
This person is credited with proposing an atomic theory that lead to the one we have today
Democritus
Aristotle
Darwin
Dalton
20
What is the symbol for this element
Zinc
Zn
30
65.39
