

Balancing Redox Reactions and Charges
Interactive Video
•
Chemistry, Science, Physics
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary principle that redox reactions must adhere to?
Conservation of volume
Conservation of energy
Conservation of mass and charge
Conservation of momentum
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example with sodium and magnesium, what was the initial issue with the charges?
The charges were both negative
The charges were both positive
The charges were not balanced
The charges were already balanced
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you balance the charges in a redox reaction?
By changing the temperature
By adjusting the coefficients
By adding more reactants
By removing products
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the number of sodium atoms when you adjust the coefficient to balance the charge?
It increases
It becomes zero
It remains the same
It decreases
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the calcium and aluminum example, what is the first common multiple of the charges used to balance them?
Seven
Six
Five
Four
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the charge on the aluminum ion in the second example?
Plus one
Plus three
Plus two
Zero
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many calcium atoms are needed on the left side to balance the reaction in the second example?
One
Two
Three
Four
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