Physical Science: Balancing Equations
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What principle states that the total mass of reactants equals the total mass of products in a chemical reaction?
Back
Law of Conservation of Mass
2.
FLASHCARD QUESTION
Front
What is the term for the small number written after an element symbol in a chemical formula?
Back
Subscript
3.
FLASHCARD QUESTION
Front
What do coefficients in a chemical equation represent?
Back
The number of molecules or moles of a substance involved in the reaction.
4.
FLASHCARD QUESTION
Front
How do you balance a chemical equation?
Back
By adjusting the coefficients to ensure the same number of each type of atom on both sides.
5.
FLASHCARD QUESTION
Front
What is the difference between a subscript and a coefficient in a chemical equation?
Back
A subscript indicates the number of atoms of an element in a molecule, while a coefficient indicates the number of molecules.
6.
FLASHCARD QUESTION
Front
What is the balanced equation for the reaction of aluminum with hydrochloric acid?
Back
2Al + 6HCl -> 3H2 + 2AlCl3
7.
FLASHCARD QUESTION
Front
In a chemical equation, what do blue numbers typically represent?
Back
Subscripts
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