
Balancing Chemical Reactions and Variables

Interactive Video
•
Chemistry, Mathematics, Science
•
9th - 12th Grade
•
Hard

Emma Peterson
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the Mass Balance Theory state about atoms in a chemical reaction?
Atoms can change into different elements.
Atoms can be created or destroyed.
Atoms can be removed from the reaction.
Atoms must be balanced on both sides of the reaction.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are variables introduced in the process of balancing a chemical reaction?
To simplify the reaction.
To remove unwanted elements.
To represent the coefficients of compounds.
To change the elements involved.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of writing equations as homogeneous equations?
To set the right side equal to zero.
To remove coefficients.
To add more variables.
To change the elements.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of the augmented matrix in balancing chemical reactions?
To change the reaction type.
To add more elements.
To represent the system of equations.
To remove variables.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which technology is used to solve the augmented matrix in the video?
Desmos Matrix Calculator
Google Sheets
Python Programming
Microsoft Excel
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a free variable in the context of solving the matrix?
A variable that changes the reaction.
A variable that can take any value.
A variable that is fixed.
A variable that is removed.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are the equations parameterized in the video?
By removing all variables.
By letting the free variable equal a parameter t.
By setting all variables to zero.
By changing the reaction type.
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