Counting atoms and balancing equations

Counting atoms and balancing equations

Assessment

Flashcard

Science

7th Grade

Practice Problem

Hard

NGSS
HS-PS1-7

Standards-aligned

Created by

Wayground Content

FREE Resource

Student preview

quiz-placeholder

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What are coefficients in a chemical equation?

Back

Coefficients are the numbers placed in front of the compounds in a chemical equation to indicate the number of molecules or moles of that substance.

Tags

NGSS.HS-PS1-7

2.

FLASHCARD QUESTION

Front

Where are coefficients located in a chemical equation?

Back

Coefficients are located at the very front of the equation.

3.

FLASHCARD QUESTION

Front

What does the law of conservation of matter state?

Back

The law of conservation of matter states that atoms are neither created nor destroyed in chemical reactions.

Tags

NGSS.HS-PS1-7

4.

FLASHCARD QUESTION

Front

What do subscripts in a chemical formula represent?

Back

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

5.

FLASHCARD QUESTION

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients to ensure that the number of atoms of each element is the same on both sides of the equation.

6.

FLASHCARD QUESTION

Front

What is the balanced equation for Al + HCl -> H2 + AlCl3?

Back

The balanced equation is 2Al + 6HCl -> 3H2 + 2AlCl3.

Tags

NGSS.HS-PS1-7

7.

FLASHCARD QUESTION

Front

What are the coefficients that balance the equation AgNO3 + H2S -> Ag2S + HNO3?

Back

The coefficients that balance the equation are 2, 1 -> 1, 2.

Tags

NGSS.HS-PS1-7

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?