Balancing Chemical Reactions
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 the 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
How do you balance a chemical equation?
Back
To balance a chemical equation, adjust the coefficients of the reactants and products to ensure that the number of atoms for each element is the same on both sides.
4.
FLASHCARD QUESTION
Front
What is a coefficient in a chemical equation?
Back
A coefficient is a number placed in front of a chemical formula in an equation to indicate how many molecules or moles of that substance are involved in the reaction.
5.
FLASHCARD QUESTION
Front
What does it mean if a chemical equation is already balanced?
Back
If a chemical equation is already balanced, it means that the number of atoms of each element is the same on both sides of the equation, and no further adjustments are needed.
6.
FLASHCARD QUESTION
Front
What is the significance of subscripts in a chemical formula?
Back
Subscripts indicate the number of atoms of each element in a molecule; they are part of the chemical formula and cannot be changed when balancing equations.
7.
FLASHCARD QUESTION
Front
What is the balanced equation for the reaction of sodium and chlorine to form sodium chloride?
Back
2Na + 1Cl2 → 2NaCl.
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