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Test Description: A review on the parts of an atom and the periodic table.
Instructions: Answer all questions to get your test result.
1) Which subatomic particle is the smallest?
A
photon
B
neutron
C
proton
D
electron
2) Which subatomic particle determines what element you have?
A
electron
B
neutron
C
photon
D
proton
3) Which subatomic particle can be added or subtracted to create an isotope?
A
neutron
B
electron
C
photon
D
proton
4) The number of protons or electrons.
A
atomic number
B
isotope number
C
atomic mass
D
atomic radius
5) Define atomic mass.
A
The number of electrons + protons
B
The number of electrons
C
The number of protons + neutrons
D
The number of photons
6) Which of these represents part of a period on the periodic table of elements?
A
Li, Be, B, C, N
B
B, Al, Ge, In, Tl
C
He, Ne, Ar, Kr
D
O, S, Se, Te, Po
7) Which of these represents part of a family on the periodic table of elements?
A
B, Al, Ge, In, Tl
B
H, He
C
K, Ca, Sc
D
Li, Be, B, C, N
8) How many valence electrons can be found in helium?
A
3
B
4
C
2
D
1
9) Which statement is true?
A
Atoms are never electrically neutral.
B
Most of the mass in an atom is found in the nucleus.
C
The noble gases are not stable.
D
The electrons are the largest subatomic particle found in an atom.
10) How did Dmitri Mendeleev originally arrange the periodic table?
A
By the atomic numbers.
B
By the number of protons.
C
By the atomic masses.
D
By valence electrons.
*select an answer for all questions
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