Balancing Chemical Equations

Flashcard
•
Science
•
8th Grade
•
Hard
Standards-aligned
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14 questions
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1.
FLASHCARD QUESTION
Front
What does the Law of Conservation of Mass say? "During a chemical reaction, mass is neither _______ or destroyed."
Back
created
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
2.
FLASHCARD QUESTION
Front
The substances that go into a reaction are called the _______.
Back
reactants
Tags
NGSS.MS-PS1-5
3.
FLASHCARD QUESTION
Front
According to the Law of Conservation of Mass, the mass of all the REACTANTS must __________ the mass of all PRODUCTS in a chemical reaction.
Back
equal
Tags
NGSS.MS-PS1-5
4.
FLASHCARD QUESTION
Front
What coefficient should be used to make the following equation balanced? N2+O2--> __?__NO
Back
2
Tags
NGSS.MS-PS1-5
5.
FLASHCARD QUESTION
Front
What is the little number after an element in a chemical equation called?
Example: H2
Back
Subscript
6.
FLASHCARD QUESTION
Front
Which of the following equations are correctly balanced?
12CO2 +H2O --> C6H12O6 + O2
,CO2 + 9H2O --> C6H12O6 + O2
,CO2 + H2O --> 3C6H12O6 + O2
,6CO2 + 6H2O --> C6H12O6 + 6O2
Back
6CO2 + 6H2O --> C6H12O6 + 6O2
Tags
NGSS.MS-PS1-5
7.
FLASHCARD QUESTION
Front
Is the following equation balanced?
4Fe + 3O2 --> 2Fe2O3
Back
yes
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
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