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 subscript in a chemical equation?
Back
A subscript is a number written below and to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.
2.
FLASHCARD QUESTION
Front
What is a reactant in a chemical equation?
Back
A reactant is a substance that undergoes a chemical change in a reaction, found on the left side of the equation.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
3.
FLASHCARD QUESTION
Front
What is a product in a chemical equation?
Back
A product is a substance that is formed as a result of a chemical reaction, found on the right side of the equation.
Tags
NGSS.MS-PS1-5
4.
FLASHCARD QUESTION
Front
What does it mean for a chemical equation to be balanced?
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.
Tags
NGSS.MS-PS1-5
5.
FLASHCARD QUESTION
Front
How do you identify coefficients in a chemical equation?
Back
Coefficients are the numbers placed in front of the chemical formulas that indicate how many molecules or moles of a substance are involved in the reaction.
6.
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 matter is neither created nor destroyed in a chemical reaction.
Tags
NGSS.MS-PS1-5
7.
FLASHCARD QUESTION
Front
What is the balanced equation for the reaction of lithium and chlorine?
Back
2Li + Cl2 -> 2LiCl.
Tags
NGSS.MS-PS1-5
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