
Balancing Chemical Equations Concepts
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Hard

Mia Campbell
FREE Resource
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6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of reaction is described when potassium and sulfur combine to form potassium sulfide?
Double replacement reaction
Single replacement reaction
Combination reaction
Decomposition reaction
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When balancing a chemical equation, what can you change to achieve balance?
The atomic numbers
The chemical symbols
The coefficients in front of the chemical formulas
The subscripts in the chemical formulas
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many potassium atoms are present on the product side of the equation K + S → K2S?
One
Four
Two
Three
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't subscripts in chemical formulas be changed when balancing equations?
They represent the number of molecules
They can be changed if needed
They are fixed by the chemical identity
They are arbitrary numbers
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the balanced equation for the reaction between potassium and sulfur?
K + S → KS
2K + S → K2S
K + 2S → KS2
2K + 2S → 2KS
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of coefficients in a balanced chemical equation?
They are used to denote temperature
They alter the atomic structure
They indicate the number of molecules or moles
They change the chemical identity
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