Balancing Equations
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
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, following the law of conservation of mass.
2.
FLASHCARD QUESTION
Front
What are coefficients in a chemical equation?
Back
Coefficients are the numbers placed in front of compounds in a chemical equation to indicate the number of molecules or moles of that substance.
3.
FLASHCARD QUESTION
Front
What are subscripts in a chemical formula?
Back
Subscripts are the small numbers written to the lower right of an element symbol in a chemical formula, indicating the number of atoms of that element in a molecule.
4.
FLASHCARD QUESTION
Front
How do you balance the equation CH₄ + O₂ → CO₂ + H₂O?
Back
The balanced equation is 1 CH₄ + 2 O₂ → 1 CO₂ + 2 H₂O.
5.
FLASHCARD QUESTION
Front
What is the first step in balancing a chemical equation?
Back
The first step is to write down the number of atoms of each element present in the reactants and products.
6.
FLASHCARD QUESTION
Front
What does the law of conservation of mass state?
Back
The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.
7.
FLASHCARD QUESTION
Front
Balance the equation: N₂ + H₂ → NH₃.
Back
The balanced equation is 1 N₂ + 3 H₂ → 2 NH₃.
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