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