
Balancing Chemical Equations
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Hard

Ethan Morris
FREE Resource
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6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial number of copper atoms on the reactant side of the equation?
One
Two
Three
Four
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many oxygen atoms are present on the product side before balancing?
Two
Four
Three
One
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What change is made to balance the oxygen atoms in the equation?
Add a coefficient of 2 in front of CuO
Add a coefficient of 3 in front of CuO
Add a coefficient of 2 in front of O2
Add a coefficient of 3 in front of O2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effect of adding a coefficient of 2 in front of CuO?
It increases the number of reactants
It decreases the number of products
It balances the oxygen atoms
It balances the copper atoms
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the imbalance of copper atoms corrected after balancing the oxygen atoms?
By adding a coefficient of 2 in front of Cu
By adding a coefficient of 3 in front of Cu
By adding a coefficient of 3 in front of O2
By adding a coefficient of 2 in front of O2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final balanced equation for the reaction?
2Cu + 2O2 → 2CuO
Cu + 2O2 → CuO2
2Cu + O2 → 2CuO
Cu + O2 → CuO
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