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Understanding Oxidation Numbers in Chemistry

Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Hard

Ethan Morris
FREE Resource
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9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Learning about acids and bases
Balancing chemical equations
Finding oxidation numbers in ClO4-
Understanding molecular geometry
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the typical oxidation number for oxygen in compounds?
-2
+1
-1
+2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which element's oxidation number is usually -1, except when bonded to oxygen?
Chlorine
Sulfur
Nitrogen
Fluorine
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you determine the oxidation number of chlorine in ClO4-?
By measuring the ion's mass
By looking at the periodic table
By using the charge of the ion and known oxidation numbers
By assuming it is always -1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the total charge of the ClO4- ion?
+1
-2
-1
0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the oxidation number of chlorine in ClO4-?
+5
+7
-1
+3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sum of oxidation numbers in a neutral compound?
Equal to the atomic mass
Zero
Equal to the number of electrons
Equal to the number of atoms
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using known oxidation numbers in calculations?
To determine molecular weight
To balance chemical equations
To predict chemical reactions
To find unknown oxidation numbers
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the oxidation number of oxygen in most compounds?
0
-2
+2
+1
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