1st Semester Exam 3 Question Preview (ID: 11965)


Semester Exam Questions. TEACHERS: click here for quick copy question ID numbers.

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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