Balancing Chemical Equations Quiz
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Practice Problem
•
Hard
Nancy Jackson
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary goal of balancing chemical equations?
To decrease the number of reactants
To increase the number of products
To satisfy the law of conservation of mass
To change the chemical properties of the reactants
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a chemical reaction, what does the arrow symbol represent?
To react
To balance
To conserve
To produce
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of coefficients in balancing chemical equations?
They are used to increase the number of reactants
They are used to multiply the subscripts to balance the equation
They change the subscripts of compounds
They are used to change the chemical properties
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When balancing the equation with oxygen and carbon, what is the first step?
Add more reactants
Remove carbon atoms
Add coefficients to balance oxygen atoms
Change the subscripts of oxygen
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't subscripts be changed when balancing chemical equations?
Because they are already balanced
Because they are too small to change
Because they define the identity of the compound
Because they are not important
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the sodium and oxygen example, what is the purpose of adding coefficients?
To change the chemical formula
To decrease the number of products
To balance the number of sodium atoms
To increase the number of oxygen molecules
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the lowest common multiple used for in balancing equations?
To change the chemical properties
To find a common factor for coefficients
To decrease the number of products
To increase the number of reactants
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