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Chemistry Assessment Practice Part 2
Test Description: Yep...even more great questions to get ready for tomorrow's assessment!
Instructions: Answer all questions to get your test result.
1) Hydrogen has 1 valence electron. How many electrons does it want to have in its' outer shell?
A
8
B
4
C
2
D
1
2) Carbon has 4 valence electrons. How many electrons does it want to have in its' outer shell?
A
4
B
1
C
2
D
8
3) Valence electrons are:
A
the amount of protons in the nucleus.
B
the amount of neutrons in the nucleus.
C
the amount of electrons an atom wants.
D
the amount of electrons in an atom's outer shell.
4) A group number (located at the top of the column in the periodic table) tells us:
A
the number of total electrons an atom has.
B
the number of valence electrons an atom has.
C
the number of protons an atom has.
D
the number of neutrons an atom has.
5) A covalent bond occurs when:
A
atoms transfer electrons between anions and cations.
B
atoms gain electrons.
C
atoms get rid of electrons.
D
atoms share 1 or more pair of electrons.
6) An ionic bond occurs when:
A
atoms transfer electrons between anions (negatively charged particles) and cations (positive charge)
B
atoms get rid of electrons.
C
atoms share 1 or more pair of electrons.
D
atoms gain electrons.
7) The oxidation number (the charge) of a Nitrogen ion is typically:
A
+3
B
+5
C
-3
D
-5
8) The oxidation number (the charge) of a Magnesium ion is typically:
A
+6
B
+2
C
-2
D
-6
9) A negatively charged atom, where electrons are gained, is known as a(n)
A
proton
B
cation
C
anion
D
neutron
10) A positively charged atom, where electrons are lost, is known as a(n)
A
proton
B
anion
C
neutron
D
cation
*select an answer for all questions
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