Balancing Chemical Equations Concepts
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Practice Problem
•
Hard
Ethan Morris
FREE Resource
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial step in balancing the chemical equation Cu2S + O2?
Add more reactants
Remove products
Count the number of atoms on each side
Change the subscripts of the compounds
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following can be altered to balance a chemical equation?
The coefficients in front of the compounds
The chemical symbols
The subscripts of the compounds
The state of matter
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of coefficients in a chemical equation?
They determine the temperature of the reaction
They indicate the number of molecules involved
They alter the atomic structure
They change the chemical properties of the compounds
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't subscripts be changed when balancing chemical equations?
They are fixed by the chemical formula
They are not visible in the equation
They are irrelevant to the reaction
They are only used for gases
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the balanced equation for the reaction between copper sulfide and oxygen?
Cu2S + O2 → Cu2 + SO2
Cu2S + 2O2 → 2Cu + 2SO2
Cu2S + O2 → 2Cu + SO2
Cu2S + O2 → Cu + SO2
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