
Oxidation Numbers and States
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Hard

Olivia Brooks
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the oxidation state of O2 in a compound where elements have the same electronegativity?
-2
+1
0
+2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of a free element with an oxidation state of zero?
SO3
Cu2+
Na
H2O
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following elements would have an oxidation state of zero when uncombined?
Cu2+
SO3
Fe
H2O
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the oxidation state of a neutral element like Na?
0
+1
-1
+2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the oxidation number when elements are not combined?
It becomes positive
It becomes undefined
It remains zero
It becomes negative
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do compounds like O2 have an oxidation number of zero?
Because they have different elements
Because they are always oxidized
Because they have the same electronegativity
Because they are ions
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a chemical bond, which atom is assumed to have a stronger attraction on the bonding pair of electrons?
The atom with a positive charge
The atom with a negative charge
The less electronegative atom
The more electronegative atom
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