What is a coefficient?
Balancing Chemical Equations

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•
Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The large number in front of a chemical formula.
2.
FLASHCARD QUESTION
Front
Is the following reaction balanced? NaHCO3 --> Na2CO3 + H2O + CO2
Back
No
3.
FLASHCARD QUESTION
Front
What is the total number of atoms present in 5Na3PO4?
Back
40
4.
FLASHCARD QUESTION
Front
Which problem is balanced? (Check ALL answers) PbO2 + 2H2, SO2 + H2O --> H2SO4, 2Na + 2H2O --> 2NaOH + H2
Back
2Na + 2H2O --> 2NaOH + H2
5.
FLASHCARD QUESTION
Front
Is the following equation balanced? 2C2H2 + 5O2 --> 4CO2 + 2H2O
Back
Yes
6.
FLASHCARD QUESTION
Front
What is a balanced chemical equation?
Back
A chemical equation where the number of atoms for each element is the same on both sides.
7.
FLASHCARD QUESTION
Front
What does it mean to balance a chemical equation?
Back
To adjust the coefficients so that the number of atoms of each element is equal on both sides.
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