
Mastering Balancing Chemical Equations

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

Mia Campbell
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to balance chemical equations?
To increase the amount of products
To change the properties of the reactants
To ensure the same number of atoms of each element on both sides
To make the equation look neat
Tags
NGSS.HS-PS1-7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in balancing the equation Mg + N2 → Mg3N2?
Add coefficients randomly
Draw a line below the arrow to separate reactants and products
Change the subscripts of the compounds
Remove elements from the equation
Tags
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many magnesium atoms are needed to balance the equation Mg + N2 → Mg3N2?
1
4
3
2
Tags
NGSS.HS-PS1-7
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equation 2 KNO3 → KNO2 + O2, why is it tricky to balance?
Nitrogen is listed twice on the reactant side
Potassium is listed twice on the product side
Oxygen is listed twice on the reactant side
Oxygen is listed twice on the product side
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the balanced form of the equation 2 KNO3 → KNO2 + O2?
2 KNO3 → KNO2 + 2 O2
KNO3 → KNO2 + O2
KNO3 → 2 KNO2 + O2
2 KNO3 → 2 KNO2 + O2
Tags
NGSS.HS-PS1-7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equation Fe + H2SO4 → Fe2(SO4)3 + H2, what is the first element to balance?
Iron
Oxygen
Sulfur
Hydrogen
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many hydrogen atoms are needed on the product side to balance the equation Fe + H2SO4 → Fe2(SO4)3 + H2?
2
8
4
6
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