Balancing Chemical 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 chemical equation?
Back
A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved during the reaction.
Tags
NGSS.MS-PS1-5
2.
FLASHCARD QUESTION
Front
What does the subscript in a chemical formula represent?
Back
The subscript represents the number of atoms of an element in a molecule.
Tags
NGSS.MS-PS1-1
3.
FLASHCARD QUESTION
Front
What is the purpose of coefficients in a chemical equation?
Back
Coefficients are used to balance chemical equations by indicating the number of molecules or moles of a substance involved in the reaction.
Tags
NGSS.MS-PS1-5
4.
FLASHCARD QUESTION
Front
What does the arrow in a chemical equation signify?
Back
The arrow represents the direction of the chemical reaction, indicating the reactants on the left and the products on the right.
5.
FLASHCARD QUESTION
Front
How do you determine if a chemical equation is balanced?
Back
Count the number of atoms of each element on both sides of the equation; if they are equal, the equation is balanced.
Tags
NGSS.MS-PS1-5
6.
FLASHCARD QUESTION
Front
What is the first step in balancing a chemical equation?
Back
Identify the number of atoms of each element in the reactants and products.
7.
FLASHCARD QUESTION
Front
What is the significance of the law of conservation of mass in chemical reactions?
Back
The law states that mass is neither created nor destroyed in a chemical reaction, which is why equations must be balanced.
Tags
NGSS.MS-PS1-5
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