Balancing equations
Flashcard
•
Science
•
7th Grade
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a balanced equation?
Back
A balanced equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved during a chemical reaction.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
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 how many molecules or moles of that substance are involved in the reaction.
Tags
NGSS.MS-PS1-5
3.
FLASHCARD QUESTION
Front
What is a reactant?
Back
A reactant is a substance that undergoes a chemical change in a reaction, found on the left side of a chemical equation.
Tags
NGSS.MS-PS1-2
4.
FLASHCARD QUESTION
Front
What is a product?
Back
A product is a substance that is formed as a result of a chemical reaction, found on the right side of a chemical equation.
Tags
NGSS.MS-PS1-2
5.
FLASHCARD QUESTION
Front
What is the purpose of balancing chemical equations?
Back
The purpose is to ensure that the law of conservation of mass is followed, meaning that the same number of atoms of each element must be present before and after the reaction.
Tags
NGSS.MS-PS1-5
6.
FLASHCARD QUESTION
Front
What does it mean if an equation is unbalanced?
Back
An unbalanced equation does not have the same number of each type of atom on both sides, indicating that mass is not conserved.
Tags
NGSS.MS-PS1-5
7.
FLASHCARD QUESTION
Front
What is a subscript in a chemical formula?
Back
A subscript is a small number written to the right of an element symbol that indicates the number of atoms of that element in a molecule.
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