Balancing Equations
Flashcard
•
Chemistry
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a balanced chemical equation?
Back
A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, indicating that mass is conserved during a chemical reaction.
2.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.
3.
FLASHCARD QUESTION
Front
What is the first step in balancing a chemical equation?
Back
The first step is to write the unbalanced equation, listing all reactants and products.
4.
FLASHCARD QUESTION
Front
How do you determine the coefficients in a balanced equation?
Back
Coefficients are determined by adjusting the numbers in front of the compounds to ensure that the number of atoms for each element is the same on both sides.
5.
FLASHCARD QUESTION
Front
What does the coefficient in a chemical equation represent?
Back
The coefficient represents the number of moles of a substance involved in the reaction.
6.
FLASHCARD QUESTION
Front
What is the balanced equation for the combustion of methane (CH4)?
Back
The balanced equation is: CH4 + 2O2 -> CO2 + 2H2O.
7.
FLASHCARD QUESTION
Front
How do you balance the equation: Fe + O2 -> Fe2O3?
Back
The balanced equation is: 4Fe + 3O2 -> 2Fe2O3.
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