1st Semester Exam 3 Question Preview (ID: 11965)
Semester Exam Questions.
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The number of protons in an atom is called
a) atomic mass
b) mass number
c) electron dot diagram
d) atomic number
isotopes of carbon 12 and carbon 14 they differ from one another by the number of
a) electrons
b) quarks
c) protons
d) neutrons
the maximum number of electrons in the second energy level of an atom is
a) 2
b) 18
c) 8
d) 4
elements arranged in vertical columns in the periodic table are called
a) period
b) both family or group
c) family
d) group
Which of the three subatomic particles are neutral
a) neutrons
b) electrons
c) protons
d) quarks
Which of the three subatomic particles are positive
a) neutrons
b) quarks
c) protons
d) electrons
The central core of the atom is called the
a) neutrons
b) nucleus
c) protons
d) electons
An atom with 26 protons, 26, electons, and 30 neutrons has a mass number
a) 26
b) 30
c) 52
d) 56
Elements in groups 3 through 12 are called
a) metalloids
b) transitions elements
c) noble gases
d) isotopes
Atoms of the same element with a different number of neutrons are called
a) metalloids
b) radiaoctive
c) transition elements
d) isotopes
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