Chemistry, 5eB(Burdge)
Chapter 2 Atoms, Molecules, and Ions
1) The scientist who determined the magnitude of the electric charge on the electron was
A) John Dalton.
B) Robert Millikan.
C) J. J. Thomson.
D) Henry Moseley.
E) J. Burdge.
Answer: B Difficult
y: 1 Easy
Topic: Components of Matter B
loom's: 1. Remember Subtopic:
Structure of the Atom Gradable
: automatic
Accessibility: Keyboard Navigation
2) When J. J. Thomson discovered the electron, what physical property of the electron did h
e measure?
A) its charge, e
B) its charge-to-mass ratio, e/m
C) its temperature, T
D) its mass, m
E) its atomic number, Z
Answer: B Difficult
y: 1 Easy
Topic: Components of Matter B
loom's: 2. Understand Subtopic:
Structure of the Atom Gradable
: automatic
Accessibility: Keyboard Navigation
3) Which field of study made a big contribution toward understanding the composition of th
e atom?
A) Electricity
B) Radiation
C) Solution chemistry
D) Electrochemistry
E) Quantum mechanics
Answer: B Difficult
y: 2 Medium
Topic: Components of Matter B
loom's: 2. Understand Subtopic:
Structure of the Atom Gradable
: automatic
,Accessibility: Keyboard Navigation
4) Which of the following is a type of radioactive radiation that has no charge and is unaffecte
d by external electric or magnetic fields?
A) α rays
B) β rays
C) γ rays
D) δ rays
E) ε rays
Answer: C Difficult
y: 1 Easy
Topic: Components of Matter B
loom's: 2. Understand Subtopic:
Structure of the Atom Gradable
: automatic
Accessibility: Keyboard Navigation
5) Which of the following is a type of radioactive radiation that consists of positively charge
d particles and is deflected away from the positively charged plate?
A) α rays
B) β rays
C) γ rays
D) δ rays
E) ε rays
Answer: A Difficult
y: 2 Medium
Topic: Components of Matter B
loom's: 2. Understand Subtopic:
Structure of the Atom Gradable
: automatic
Accessibility: Keyboard Navigation
6) Which of the following is a type of radioactive radiation that consists of electrons and i
s deflected away from the negatively charged plate?
A) α rays
B) β rays
C) γ rays
D) δ rays
E) ε rays
Answer: B Difficult
y: 1 Easy
Topic: Components of Matter B
loom's: 2. Understand
Subtopic: Structure of the Atom; Atomic Theories Gr
adable: automatic
Accessibility: Keyboard Navigation
7) Which of these scientists developed the nuclear model of the atom?
A) John Dalton
, B) Robert Millikan
C) J. J. Thomson
D) Henry Moseley
E) Ernest Rutherford
Answer: E Difficult
y: 1 Easy
Topic: Components of Matter B
loom's: 1. Remember
Subtopic: Structure of the Atom; Atomic Theories Gr
adable: automatic
Accessibility: Keyboard Navigation
8) Rutherford's experiment with alpha particle scattering by gold foil established that
A) positive charge not evenly distributed throughout an atom.
B) electrons have a negative charge.
C) electrons have a positive charge.
D) atoms are made of protons, neutrons, and electrons.
E) protons are 1840 times heavier than electrons.
Answer: A Difficult
y: 1 Easy
Topic: Components of Matter B
loom's: 2. Understand Subtopic:
Structure of the Atom Gradable
: automatic
Accessibility: Keyboard Navigation
9) Who is credited with measuring the mass/charge ratio of the electron?
A) Dalton
B) Chadwick
C) Thomson
D) Millikan
E) Rutherford
Answer: C Difficult
y: 1 Easy
Bloom's: 1. Remember Subtopi
c: Structure of the Atom Gradab
le: automatic
Accessibility: Keyboard Navigation
10) Who is credited with first measuring the charge of the electron?
A) Dalton
B) Gay-Lussac
C) Thomson
D) Millikan
E) Rutherford
Answer: D Difficult
y: 1 Easy
Topic: Components of Matter B