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Atomic Theory
Test Description: This unit contains questions on The Atom
Instructions: Answer all questions to get your test result.
1) What is a specific amount of energy absorbed by an electron?
A
photon
B
nucleon
C
quantum
D
ion
2) In the plum pudding model, the pudding represents ___ and the raisins represent ___.
A
the electrons; the positive protons
B
the positively charged area of the atom; the electrons
C
the protons of the atom; the neutrons
D
the neutral area of the atom; the electrons
3) What subatomic particle has a neutral charge?
A
positron
B
proton
C
nuetron
D
electron
4) In which pair do the particles have approximately the same mass?
A
proton and electron
B
neutron and an alpha particle
C
proton and neutron
D
neutron and electron
5) The atomic mass of an element is the weighted average of the
A
atomic masses of the naturally occurring isotopes of that element
B
atomic number of the naturally occurring isotopes of that element
C
number of protons in the isotopes of that element
D
number of neutrons in the isotopes of that element
6) Which statement best describes the nucleus of an aluminum atom?
A
It has a charge of +13 and is surrounded by 10 electrons.
B
It has a charge of +13 and is surrounded by 13 electrons.
C
It has a charge of –13 and is surrounded by 13 electrons.
D
It has a charge of –13 and is surrounded by 10 electrons.
7) Which symbol represents a particle with a total of 10 electrons?
A
Al+3
B
N+3
C
N
D
Al
8) An element with a charge is an
A
ion
B
acid
C
atom
D
electron
9) An element with a negative charge (ex. S-2) indicates there was ain this atom is
A
gain of two nuetrons
B
loss of two electrons
C
loss of two protons
D
gain of two electrons
10) Which electron configuration is correct for F-?
A
2-8-2
B
2-8-1
C
2-7
D
2-8
*select an answer for all questions
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