
Balancing Chemical Equations: Techniques and Practice

Interactive Video
•
Chemistry
•
6th - 10th Grade
•
Hard

Mia Campbell
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in balancing a combustion reaction?
Multiply the entire equation by two
Balance the hydrogen atoms
Balance the carbon atoms
Balance the oxygen atoms
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When balancing the equation involving butane, why do we multiply the entire equation by two?
To increase the number of oxygen atoms
To avoid fractions in the coefficients
To balance the hydrogen atoms
To balance the carbon atoms
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the least common multiple used to balance the equation involving gallium and copper bromide?
3
6
14
2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the reaction involving sodium metal and elemental sulfur, what coefficient is placed in front of sodium (Na) to balance the equation?
4
2
16
8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For the double replacement reaction involving sodium phosphate and magnesium chloride, how many sodium chloride (NaCl) units are produced?
2
12
3
6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of viewing phosphate (PO4) as a unit when balancing double replacement reactions?
To increase the number of magnesium atoms
To decrease the number of sodium atoms
To balance the oxygen atoms first
To simplify the balancing process
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of balancing the equation for the reaction of sulfur dioxide with oxygen?
SO2 + O2 = SO3
2SO2 + O2 = 2SO3
SO2 + 1/2O2 = SO3
2SO2 + 2O2 = 2SO3
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