Balancing equations review
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a coefficient in a chemical equation?
Back
A coefficient is a large number placed before a formula of a substance in a chemical equation to indicate how many molecules or moles of that substance are involved in the reaction.
2.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
The law of conservation of mass states that in a chemical reaction, the total mass of the reactants is equal to the total mass of the products.
3.
FLASHCARD QUESTION
Front
What are products in a chemical reaction?
Back
Products are new substances that are formed as a result of a chemical reaction.
4.
FLASHCARD QUESTION
Front
What is the difference between reactants and products?
Back
Reactants are the starting substances in a chemical reaction, while products are the substances produced at the end of the reaction.
5.
FLASHCARD QUESTION
Front
How do you know if a chemical equation is balanced?
Back
A chemical equation is balanced when the number of atoms of each element is the same on both sides of the equation.
6.
FLASHCARD QUESTION
Front
What does it mean to balance a chemical equation?
Back
Balancing a chemical equation means adjusting the coefficients to ensure that the number of atoms for each element is equal on both sides of the equation.
7.
FLASHCARD QUESTION
Front
What is a subscript in a chemical formula?
Back
A subscript is a small number written to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.
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