Chemistry Assessment Practice Part 2 Question Preview (ID: 12800)


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Hydrogen has 1 valence electron. How many electrons does it want to have in its' outer shell?
a) 2
b) 8
c) 4
d) 1

Carbon has 4 valence electrons. How many electrons does it want to have in its' outer shell?
a) 8
b) 2
c) 4
d) 1

Valence electrons are:
a) the amount of electrons in an atom's outer shell.
b) the amount of electrons an atom wants.
c) the amount of protons in the nucleus.
d) the amount of neutrons in the nucleus.

A group number (located at the top of the column in the periodic table) tells us:
a) the number of valence electrons an atom has.
b) the number of protons an atom has.
c) the number of total electrons an atom has.
d) the number of neutrons an atom has.

A covalent bond occurs when:
a) atoms share 1 or more pair of electrons.
b) atoms transfer electrons between anions and cations.
c) atoms get rid of electrons.
d) atoms gain electrons.

An ionic bond occurs when:
a) atoms transfer electrons between anions (negatively charged particles) and cations (positive charge)
b) atoms share 1 or more pair of electrons.
c) atoms get rid of electrons.
d) atoms gain electrons.

The oxidation number (the charge) of a Nitrogen ion is typically:
a) -3
b) +3
c) -5
d) +5

The oxidation number (the charge) of a Magnesium ion is typically:
a) +2
b) -2
c) +6
d) -6

A negatively charged atom, where electrons are gained, is known as a(n)
a) anion
b) cation
c) neutron
d) proton

A positively charged atom, where electrons are lost, is known as a(n)
a) cation
b) anion
c) neutron
d) proton

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