Balancing Chemical Equations

Balancing Chemical Equations

Assessment

Flashcard

Science

8th Grade

Hard

NGSS
MS-PS1-5, MS-PS1-1, MS-PS1-2

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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