What is the primary goal when balancing a redox reaction?

Balancing Redox Reactions Concepts

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Chemistry, Science
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9th - 12th Grade
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Mia Campbell
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To reduce the reaction temperature
To change the reaction products
To conserve mass and charge
To increase the reaction speed
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the oxidation number of aluminum in its elemental form?
+3
0
-1
+1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you determine which element is oxidized in a redox reaction?
By checking which element loses electrons
By checking which element is in a gaseous state
By checking which element gains electrons
By checking which element has a negative charge
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the oxidation number of an element that is reduced?
It increases
It decreases
It becomes zero
It remains the same
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the half-reaction for aluminum, how many electrons are added to balance the charge?
Four electrons
Three electrons
Two electrons
One electron
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the least common multiple of electrons needed to balance the half-reactions?
Seven
Six
Five
Four
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many hydrogen protons are needed on the left side to balance the hydrogen half-reaction?
One
Two
Three
Six
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