Balancing equations

Flashcard
•
Science
•
7th Grade
•
Hard
Standards-aligned
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16 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 the reaction.
Tags
NGSS.MS-PS1-1
NGSS.MS-PS1-5
2.
FLASHCARD QUESTION
Front
What does it mean when an equation is unbalanced?
Back
An unbalanced equation has a different number of atoms of one or more elements on each side, meaning mass is not conserved.
Tags
NGSS.MS-PS1-5
3.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
The law states that in a chemical reaction, the total mass of the reactants equals the total mass of the products.
Tags
NGSS.MS-PS1-5
4.
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 and compare them.
Tags
NGSS.MS-PS1-5
5.
FLASHCARD QUESTION
Front
What is the purpose of balancing chemical equations?
Back
Balancing chemical equations ensures that the law of conservation of mass is followed, showing that matter is neither created nor destroyed.
Tags
NGSS.MS-PS1-5
6.
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.
7.
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.
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