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Test Description: 1
Instructions: Answer all questions to get your test result.
1) The atomic number tells you the
A
the number of protons plus the number of neutrons in an atom of that element
B
number of protons in an atom of that element
C
the mass of an atom of that element
D
the number of neutrons
2) The atomic mass tells you
A
the number of electrons in an atom of that element
B
the number of neutrons in an atom of that element
C
the number of protons in an atom of that element
D
the number of protons plus the number of neutrons in an atom of that element
3) The number of electrons in an atom is equal to
A
the number of neutrons in an atom of that element
B
the number of protons plus the number of neutrons in an atom of that element
C
the number of protons in an atom of that element
D
the atomic mass
4) Which element has 26 protons in its nucleus?
A
Silicon
B
Iron
C
Aluminum
D
Magnesium
5) Which element usually has 10 neutrons in its nucleus?
A
Aluminum
B
Beryllium
C
Sulfur
D
Fluorine
6) What is an isotope?
A
It has the same number of protons but different number of electrons
B
It has the same number of neutrons but different number of protons
C
It has the same number of neutrons but different number of electrons
D
It has the same number of protons but different number of neutrons
7) Which element has 29 electrons?
A
Silicon
B
Aluminum
C
Copper
D
Phosphorus
8) Which element has 5 fewer protons than Manganese (Mn)?
A
Nitrogen
B
Calcium
C
Zinc
D
Argon
9) Which element usually has 12 neutrons in its nucleus?
A
Oxygen
B
Carbon
C
Magnesium
D
Arsenic
10) This element has four more protons than Phosphorus (P)
A
Potassium
B
Argon
C
Selenium
D
Sodium
*select an answer for all questions
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