Counting atoms and balancing equations

Counting atoms and balancing equations

Assessment

Flashcard

Science

7th Grade

Hard

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

Standards-aligned

Created by

Wayground Content

FREE Resource

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16 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What are coefficients in a chemical equation?

Back

Coefficients are numbers placed in front of the chemical formulas to indicate how many molecules or atoms of each substance are involved in the reaction.

Tags

NGSS.MS-PS1-1

2.

FLASHCARD QUESTION

Front

Where are coefficients located in a chemical equation?

Back

At the very front of the equation.

3.

FLASHCARD QUESTION

Front

How many atoms are in 2Al₂(SO₄)₃?

Back

28

Tags

NGSS.MS-PS1-1

4.

FLASHCARD QUESTION

Front

What do subscripts represent in a chemical formula?

Back

Subscripts indicate how many of that specific element are included in the compound.

5.

FLASHCARD QUESTION

Front

How many nitrogen (N) atoms are in (NH₄)₂CrO₄?

Back

2

Tags

NGSS.MS-PS1-1

6.

FLASHCARD QUESTION

Front

How many oxygen (O) atoms are in Al₂(SO₄)₃?

Back

12

Tags

NGSS.MS-PS1-1

7.

FLASHCARD QUESTION

Front

What is the purpose of balancing a chemical equation?

Back

To ensure that the number of atoms for each element is the same on both sides of the equation.

Tags

NGSS.MS-PS1-5

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