

Balancing Chemical Equations Techniques
Interactive Video
•
Chemistry, Science
•
7th - 10th Grade
•
Practice Problem
•
Hard
Emma Peterson
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key indicator of a combustion reaction?
Formation of nitrogen gas
Absence of oxygen
Formation of carbon dioxide and water
Presence of water as a reactant
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the direct method of balancing equations, what is the first step?
Using algebraic variables
Adding water to the equation
Adjusting the coefficients of the products
Counting the number of atoms in reactants and products
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When balancing C3H8 + O2 → CO2 + H2O, what is the coefficient of CO2 after balancing?
2
4
1
3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you handle fractional coefficients in a balanced equation?
Add more reactants
Ignore them
Convert them to whole numbers by multiplying all coefficients by the denominator
Leave them as fractions
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in the algebraic method of balancing equations?
Adding coefficients randomly
Using trial and error
Counting atoms
Assigning variables to each compound
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the equation N2 + H2 → NH3, what is the balanced coefficient for H2 using the algebraic method?
4
3
2
1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method is generally faster for simple equations?
Direct method
Algebraic method
Both are equally fast
Neither method is fast
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