Assigning Oxidation Numbers
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Chemistry
9th - 12th Grade
NGSS covered
Used 29+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the oxidation state of sulfur in Al2(SO4)3?
+4
+6
+2
+8
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the oxidation state of chromium in Cr2O7^2-?
+3
+4
+5
+6
Tags
NGSS.HS-PS1-1
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the rule for the sum of oxidation numbers in a neutral compound?
The sum of the oxidation numbers in a neutral compound is equal to zero.
The sum of the oxidation numbers in a neutral compound is equal to one.
The sum of the oxidation numbers in a neutral compound is equal to the number of atoms.
The sum of the oxidation numbers in a neutral compound is equal to the molecular weight.
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is an oxidation number?
A value that represents the total number of protons in an atom.
A value that represents the total number of electrons that an atom either gains or loses in order to form a chemical bond.
A measure of the atomic mass of an element.
A value that indicates the temperature at which a substance changes state.
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the oxidation state of carbon in CO2?
+2
+4
0
-4
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the oxidation state of oxygen in most compounds?
0
-1
-2
+1
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the oxidation state of phosphorus in Mg3(PO4)2?
+3
+4
+5
+6
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