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Atomic Structure
Atomic Structure
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Covers Pearson Chemistry Ch 4 Atomic Structure
Flashcards
33 cards
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Practice quiz
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Questions
33
Answers
1
Dalton proposed his atomic theory in what year?
1818
1900
1909
1808
2
What is the atomic number of this element
Zn
30
35.39
65.39
3
Which statement is consistentwith the results of Rutherford’s gold foil experiment?
All atoms have a positivecharge.
Atoms are mostly empty space.
The nucleus of an atomcontains protons and electrons.
Mass is spread uniformlythroughout an atom.
4
What did Rutherford theorize as result of his experimentation?
That the negative charge is central to the atom.
The Plum-pudding model of the atom.
That an atom is solid like a billiard ball.
That the positive charge and mass are central to the atom.
5
The first person to propose atomic theory was
Democritus
Dalton
Darwin
Sophicles
6
How many protons does this element have?
65.39
1,903
30
35.39
7
There are diff types of atoms with diff # of protons, neutrons, and electrons called _______.
ions
atoms
isotopes
elements
8
What is the symbol for this element
65.39
Zinc
30
Zn
9
The subatomic particle with a positive charge
all of these
neutron
electron
proton
10
How many electrons does this element have?
1.008
0.008
1
2
11
This person is credited with proposing an atomic theory that lead to the one we have today
Darwin
Dalton
Democritus
Aristotle
12
How many protons are in this element?
12.011
12
0.011
6
13
Who's experiment is this?
JJ Thomson
Millikan
Dalton
Rutherford
14
Changing the number of neutrons has which effect on the overall charge of the atom?
Makes it negative
Makes it radioactive
causes no change
Makes it positve
15
An isotope has ______________ number of protons and ____________ number of neutrons
the same; the same
the same; a different
a different; the same
a different; a different
16
What is the mass number for this element?
1.008
1
H
All of these
17
Who is credited with the discovery of the electron?
Dalton
Rutherford
Millikan
Thomson
18
The smallest particle of an element that retains all the properties of that element
proton
matter
neutron
atom
19
Atoms combine in one-to-one ratios to form compounds.
Always true.
Never true.
Sometimes true.
20
Atoms of one element are different from atoms of other elements.
Always true.
Sometimes true.
Never true.
21
An element's position on the periodic table is determined by its
atomic number
symbol
date of discovery
name
22
The number of protons plus the number of neutrons in the nucleus of an atom of an element.
Atomic Mass
Atomic Number
Mass Number
Isotope
23
The subatomic particle with no charge
electron
none of these
neutron
proton
24
Atomic mass is the weighted mass of
the protons of an element
the neutrons of an element
the isotopes of an element
none of these
25
Who proposed this model of the atom?
Dalton
Rutherford
Millikan
JJ Thomson
26
Atoms of one element change into atoms of another element during chemical reactions.
Never true.
Sometimes true.
Always true.
27
The atomic number tells you
both of these
neither of these
the number of electrons
the number of protons
28
The subatomic particle with a negative charge
neutron
megatron
electron
proton
29
________ combine together in order to form _______________.
atoms, compounds
ions, atoms
compounds, elements
atoms, elements
30
The two letters in each box on the periodic table are each element's
Name
Classification
Symbol
Initials
31
Who's experiment is this?
Democritus
JJ Thomson
Rutherford
Millikan
32
Democritus theorized that atoms could not be
divided
destroyed
created
all of these
33
The number of protons in thenucleus of an atom of an element.
Atomic Number
Mass Number
Atomic Mass
Isotope
