Chapter 11 Test
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by Craig Fisher
| 50 Questions
1
2
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
What particle did J.J. Thompson discover?
A neutron
B electron
C atom
D proton
3
2
How would you describe the nucleus?
A Dense, positively charged
B Large, positively charged
C Tiny, negatively charged
D Dense, negatively charged
4
2
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
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
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
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
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
Which of the following has the least mass?
A nucleus
B proton
C neutron
D electron
10
2
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
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
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
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
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
In an atom, which has the least mass?
A nucleus
B proton
C neutron
D electron
16
2
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
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
What is the meaning of atom?
A Dividable
B Invisible
C Hard particles
D not able to be divided
19
2
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
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
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
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
The discovery of which particle proved that the atom is NOT indivisible?
A Nucleus
B Proton
C Neutron
D Electron
24
2
Who proposed this new model of an atom?
A Bohr
B Thomson
C Rutherford
D Democritus
25
2
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
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
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
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
All substances are made of
Word bank for Question 30

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

Electron, atoms, isotopes, protons, forces, electron clouds, neutrons
31
2
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
The pushes and pulls between objects are called ______
Word Bank for Questions 31 - 33
electron, atoms, isotopes, protons, forces, electron clouds, neutrons
33
2
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
A charged particle is called a(n) _________
Word Bank for Questions 34 - 35
nucleus, mass number, atom, atomic number, ion
35
2
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
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
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
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
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
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
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
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
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
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
The sum of protons and neutrons in an atom
A
B
C
D
E
F
G
H
I
J
46
2
Which letter refers to the particle with no charge?
A
B
C
D
47
2
Which letter refers to the proton?
A
B
C
D
48
2
Which letter refers to the particle with a negative charge?
A
B
C
D
49
2
Which letter refers to the nucleus?
A
B
C
D
50
2
What would happen to a nucleus containing two or more protons if the strong nuclear force were absent?
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