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Chapter 11 Test
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by Craig Fisher
| 50 Questions
1
2 pts
The smallest particle into which an element can be divided and still be the same substance is called a(n)?
A nucleus
B electron
C atom
D neutron
2
2 pts
What particle did J.J. Thompson discover?
A neutron
B electron
C atom
D proton
3
2 pts
How would you describe the nucleus?
A Dense, positively charged
B Large, positively charged
C Tiny, negatively charged
D Dense, negatively charged
4
2 pts
Where are electrons likely to be found?
A the nucleus
B electron clouds
C mixed throughout an atom
D paths, or energy levels
5
2 pts
Dalton believed that...
A atoms of the same element are exactly alike.
B most substances are made of atoms
C atoms of different elements are the same
D atoms can be divided
6
2 pts
What did Democritus, Dalton, Thompson, Rutherford, and Bohr all have in common?
A They each identified new elements
B They each identified new isotopes of atoms
C They each contributed to the development of the atomic theory
D They each conducted experiments in which particles collided
7
2 pts
In Thompson's "plum-pudding" (our chocolate chip cookie dough) model of the atom, the plums (chocolate chips) represent
A atoms
B protons
C neutrons
D electrons
8
2 pts
An atom of gold with 79 protons, 79 electrons, and 118 neutrons would have a mass number of
A 39
B 158
C 197
D 276
9
2 pts
Which of the following has the least mass?
A nucleus
B proton
C neutron
D electron
10
2 pts
If an isotope of uranium, uranium-235, has 92 protons, how many protons does uranium- 238 have?
A 92
B 95
C 143
D 146
11
2 pts
How did Democritus describe atoms?
A large, soft particles
B dividable particles
C small, hard particles
D a single material with one size and shape
12
2 pts
Calculate the atomic mass of gallium, which consists of 60% gallium-69 and 40% gallium-71.
A 16.9 amu
B 87.3 amu
C 140 amu
D 69.8 amu
13
2 pts
What element and isotope results from the combination of two Be-10 isotopes?
A CO2
B Be-20
C O-20
D H2SO4
14
2 pts
An atom of carbon with 6 protons, 6 electrons and 6 neutrons would have a mass number of?
A 6
B 18
C 12
D 15
15
2 pts
In an atom, which has the least mass?
A nucleus
B proton
C neutron
D electron
16
2 pts
Which was one of Dalton's ideas?
A All substances are made of atoms
B Atoms can be divided
C Atoms can be destroyed
D Most substances are made of atoms
17
2 pts
What took place in the late 1880's?
A Dalton created a new atom theory
B Dalton disproved his theory
C Dalton's theory was proved
D Dalton's theory was changed
18
2 pts
What is the meaning of atom?
A Dividable
B Invisible
C Hard particles
D not able to be divided
19
2 pts
Which statement about atoms is true?
A A penny has about 20,000 atoms
B Aluminium has large atoms
C A penny has more atoms than Earth has people
D Aluminium atoms have a diameter of about 3 cm
20
2 pts
Which statement about isotopes is true?
A The have the same number of protons
B they have the same number of neutrons
C They have a different atomic number
D The have the same mass
21
2 pts
According to Rutherford, what was in the center of an atom?
A an electron
B a nucleus
C a particle
D a proton
22
2 pts
Which phrase describes radioactive isotopes?
A They are stable
B They never change
C They are unstable
D They don't produce energy
23
2 pts
The discovery of which particle proved that the atom is NOT indivisible?
A Nucleus
B Proton
C Neutron
D Electron
24
2 pts
Who proposed this new model of an atom?
A Bohr
B Thomson
C Rutherford
D Democritus
25
2 pts
The raised surfaces show?
A protons
B electrons
C neutrons
D isotopes
Word Bank for Questions 26 - 28

atom, atomic number, nucleus, atomic mass proton, isotope, electron, electron cloud, neutron
26
2 pts
A positively charged particle in the nucleus of an atom is called a(n)
Word Bank for Questions 26 - 28
atom, atomic number, nucleus, atomic mass, proton, psotope, electron, electron cloud, neutron
27
2 pts
An atom of an element that has the same number of protons but different numbers of neutrons is called a(n)
Word Bank for Questions 26 - 28
atom, atomic number, nucleus, atomic mass, proton, isotope, electron, electron cloud, neutron
28
2 pts
The smallest particle into which an element can be divided and still be the same substance is a(an)
Word Bank for Question 29

electrons, electron cloud, nucleus, atoms, isotopes, protons
29
2 pts
All substances are made of
Word bank for Question 30

strong, gravitational, electromagnetic, weak
30
2 pts
Objects are pulled toward one another by ___________ force
Word Bank for Questions 31 - 33

Electron, atoms, isotopes, protons, forces, electron clouds, neutrons
31
2 pts
Twentieth - Century scientists believe electrons are found in regions called ______
Word Bank for Questions 31 - 33
Electron, atoms, isotopes, protons, forces, electron clouds, neutrons
32
2 pts
The pushes and pulls between objects are called ______
Word Bank for Questions 31 - 33
electron, atoms, isotopes, protons, forces, electron clouds, neutrons
33
2 pts
Because the mass of an _________ is so small, it is usually thought of as almost zero.
Word Bank for Questions 34 - 35

nucleus, mass number, atom, atomic number,ion
34
2 pts
A charged particle is called a(n) _________
Word Bank for Questions 34 - 35
nucleus, mass number, atom, atomic number, ion
35
2 pts
All atoms of an element have the same
Matching Questions 36-45

A. atomic number B. nucleus C. electron cloud D. mass number E. Isotope
F. neutron
G. atom
H. electron
I. atomic mass unit (amu)
J. proton
36
2 pts
Particle that cannot be cut
A
B
C
D
E
F
G
H
I
J
Word Bank (Matching 36-45)
A. atomic number
B. nucleus
C. electron cloud
D. mass number
E. Isotope
F. neutron
G. atom
H. electron
I. atomic mass unit (amu)
J. proton
37
2 pts
Negatively charged particle discovered by Thomson
A
B
C
D
E
F
G
H
I
J
Word Bank (Matching 36-45)
A. atomic number
B. nucleus
C. electron cloud
D. mass number
E. Isotope
F. neutron
G. atom
H. electron
I. atomic mass unit (amu)
J. proton
38
2 pts
Central region of the atom
A
B
C
D
E
F
G
H
I
J
Word Bank (Matching 36-45)
A. atomic number
B. nucleus
C. electron cloud
D. mass number
E. Isotope
F. neutron
G. atom
H. electron
I. atomic mass unit (amu)
J. proton
39
2 pts
Region where electrons are likely to be found
A
B
C
D
E
F
G
H
I
J
Word Bank (Matching 36-45)
A. atomic number
B. nucleus
C. electron cloud
D. mass number
E. Isotope
F. neutron
G. atom
H. electron
I. atomic mass unit (amu)
J. proton
40
2 pts
Particle in the center of an atom that has no charge
A
B
C
D
E
F
G
H
I
J
Word Bank (Matching 36-45)
A. atomic number
B. nucleus
C. electron cloud
D. mass number
E. Isotope
F. neutron
G. atom
H. electron
I. atomic mass unit (amu)
J. proton
41
2 pts
Subatomic particle that has a positive charge
A
B
C
D
E
F
G
H
I
J
Word Bank (Matching 36-45)
A. atomic number
B. nucleus
C. electron cloud
D. mass number
E. Isotope
F. neutron
G. atom
H. electron
I. atomic mass unit (amu)
J. proton
42
2 pts
A unit of mass that describes the mass of an atom or molecule
A
B
C
D
E
F
G
H
I
J
Word Bank (Matching 36-45)
A. atomic number
B. nucleus
C. electron cloud
D. mass number
E. Isotope
F. neutron
G. atom
H. electron
I. atomic mass unit (amu)
J. proton
43
2 pts
The number of protons in the nucleus of an atom
A
B
C
D
E
F
G
H
I
J
Word Bank (Matching 36-45)
A. Atomic number
B. nucleus
C. electron cloud
D. mass number
E. Isotope
F. neutron
G. atom
H. electron
I. atomic mass unit (amu)
J. proton
44
2 pts
Atom that has the same number of protons but different numbers of neutrons
A
B
C
D
E
F
G
H
I
J
Word Bank (Matching 36-45)
A. atomic number
B. nucleus
C. electron cloud
D. mass number
E. Isotope
F. neutron
G. atom
H. electron
I. atomic mass unit (amu)
J. proton
45
2 pts
The sum of protons and neutrons in an atom
A
B
C
D
E
F
G
H
I
J
46
2 pts
Which letter refers to the particle with no charge?
A
B
C
D
47
2 pts
Which letter refers to the proton?
A
B
C
D
48
2 pts
Which letter refers to the particle with a negative charge?
A
B
C
D
49
2 pts
Which letter refers to the nucleus?
A
B
C
D
50
2 pts
What would happen to a nucleus containing two or more protons if the strong nuclear force were absent?
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