
Balancing Chemical Equations Challenge

Interactive Video
•
Science
•
6th - 10th Grade
•
Hard
Standards-aligned

Ethan Morris
FREE Resource
Standards-aligned
Read more
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What must be true about the number of each type of atom on both sides of a balanced chemical equation?
They must be different.
They must be equal.
They must be double on the product side.
They must be half on the reactant side.
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using coefficients in balancing chemical equations?
To remove elements from the equation.
To ensure the same number of each atom on both sides.
To add new elements to the equation.
To change the subscripts of the elements.
Tags
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equation H2 + O2 -> H2O, what coefficient should be placed in front of H2O to balance the oxygen atoms?
3
2
1
4
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When balancing the equation Fe + O2 -> Fe2O3, what is the lowest common multiple of the oxygen atoms?
2
3
4
6
Tags
NGSS.MS-PS1-5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equation KClO3 -> KCl + O2, what coefficient should be placed in front of KClO3 to balance the oxygen atoms?
3
2
4
1
Tags
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When balancing equations with O2 as a reactant, what is the recommended strategy?
Balance oxygen last.
Balance oxygen first.
Double the oxygen atoms.
Ignore oxygen.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equation C2H6 + O2 -> CO2 + H2O, what coefficient should be placed in front of O2 to balance the equation?
7
5
3
4
Tags
NGSS.MS-PS1-5
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