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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
quantum
B
nucleon
C
photon
D
ion
2) In the plum pudding model, the pudding represents ___ and the raisins represent ___.
A
the positively charged area of the atom; the electrons
B
the electrons; the positive protons
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
electron
B
nuetron
C
proton
D
positron
4) In which pair do the particles have approximately the same mass?
A
neutron and an alpha particle
B
proton and neutron
C
proton and electron
D
neutron and electron
5) The atomic mass of an element is the weighted average of the
A
number of neutrons in the isotopes of that element
B
atomic masses of the naturally occurring isotopes of that element
C
number of protons in the isotopes of that element
D
atomic number of the naturally occurring 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 10 electrons.
D
It has a charge of +13 and is surrounded by 13 electrons.
7) Which symbol represents a particle with a total of 10 electrons?
A
N
B
N+3
C
Al
D
Al+3
8) An element with a charge is an
A
acid
B
electron
C
ion
D
atom
9) An element with a negative charge (ex. S-2) indicates there was ain this atom is
A
gain of two electrons
B
loss of two electrons
C
loss of two protons
D
gain of two nuetrons
10) Which electron configuration is correct for F-?
A
2-7
B
2-8-1
C
2-8
D
2-8-2
*select an answer for all questions
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