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WorksheetsQuiz: Balancing Equations
Total questions: 12
Worksheet time: 11mins
The (a) explains why we must balance chemical equations.
Which of the following equations is already balanced?
2H₂ + O₂ → 2H₂O
N₂ + H₂ → NH₃
H₂ + O₂ → H₂O
CH₄ + O₂ → CO₂ + H₂O
What number is used to balance chemical equations by changing the quantity of molecules?
Subscript
Variable
Exponent
Coefficient
In the equation C + O₂ → CO₂, how many oxygen atoms are on each side?
2
3
4
1
Which of the following equations is incorrectly balanced?
2H₂ + O₂ → H₂O
2Na + Cl₂ → 2NaCl
Fe₂O₃ + 3CO → 2Fe + 3CO₂
4Al + 3O₂ → 2Al₂O₃
In a balanced equation, the number of atoms of each element on the reactant side must be (a) to the number of atoms on the product side.
In the BALANCED equation 4Fe + ?O₂ → 2Fe₂O₃, what is the missing coefficient for O2?
(a)
When balancing an equation, you cannot change the (a) in a chemical formula because it would change the identity of the substance.
What is the missing coefficient for Na to balance this equation?
?Na + Cl₂ → 2NaCl
(a)
What is the missing coefficient for H₂O to balance this equation?
2H₂ + O₂ → ? H₂O
(a)
What is the missing coefficient for Cu to balance this equation?
?Cu + 2AgNO3 🡪 Cu(NO3)2 + 2Ag
(a)
