Balancing Chemical Equations

Flashcard
•
Science
•
7th - 8th 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 a chemical reaction.
Tags
NGSS.MS-PS1-5
2.
FLASHCARD QUESTION
Front
What does the coefficient in a chemical equation represent?
Back
The coefficient indicates the number of molecules or moles of a substance involved in the reaction.
3.
FLASHCARD QUESTION
Front
How do you balance a chemical equation?
Back
To balance a chemical equation, adjust the coefficients of the reactants and products until the number of atoms of each element is the same on both sides.
Tags
NGSS.MS-PS1-5
4.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.
Tags
NGSS.MS-PS1-5
5.
FLASHCARD QUESTION
Front
In the equation 2Li + Cl2 → 2LiCl, how many lithium (Li) atoms are present?
Back
There are 2 lithium (Li) atoms present.
Tags
NGSS.MS-PS1-1
6.
FLASHCARD QUESTION
Front
In the compound 3Cr(MnO4)6, how many manganese (Mn) atoms are there?
Back
There are 18 manganese (Mn) atoms.
Tags
NGSS.MS-PS1-1
7.
FLASHCARD QUESTION
Front
How many carbon (C) atoms are in C6H12O6?
Back
There are 6 carbon (C) atoms.
Tags
NGSS.MS-PS1-1
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