Which of the following best describes the role of coefficients in a chemical equation?

They show the number of molecules or formula units.

They show the number of atoms in a molecule.

They show the type of chemical bond.

They show the charge of the ion.

A student writes the equation $$\mathrm{CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O}$$ . Is this equation balanced? Explain your reasoning.

Yes, because the number of each type of atom is the same on both sides.

No, because there are more oxygen atoms on the product side.

No, because there are more hydrogen atoms on the reactant side.

No, because there are more carbon atoms on the product side.

A student claims that $$\mathrm{2H_2 + O_2 \rightarrow 2H_2O}$$ is not balanced because there are more hydrogen atoms than oxygen atoms. Is this reasoning correct? Why or why not?

No, because the number of atoms must be equal for each element separately, not compared between elements.

Yes, because the number of atoms must be equal for each element.

Yes, because hydrogen and oxygen must be equal.

No, because the equation is not balanced at all.

Understanding Chemical Equations Quiz

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Hard

•

NGSS

MS-PS1-5, MS-PS1-1, HS-PS1-7

+1

Standards-aligned

Ricardo Oyanedel Olivares

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is the correct chemical formula for water?

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1

2

0

4

Tags

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Number of oxygen atoms in the molecule

Number of molecules

Number of electrons

Number of protons

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Yes

No

Tags

NGSS.MS-PS1-5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which equation is balanced?

Tags

NGSS.MS-PS1-5

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever

or continue with

Microsoft

Apple

Others

Already have an account?

Similar Resources on Wayground

15 questions

Quiz Set 1- Variety of Minerals

Quiz

•

8th - 9th Grade

16 questions

Atomic Structure Practice

Quiz

•

8th - 9th Grade

20 questions

Winds,Storms and Cyclones

Quiz

•

6th - 12th Grade

18 questions

Sources of Energy

Quiz

•

7th - 10th Grade

17 questions

Reflection and Mirrors

Quiz

•

8th Grade

20 questions

Chapter 6 Quiz: A Trip Through Geologic Time

Quiz

•

8th Grade

15 questions

Types Of Energy

Quiz

•

5th - 8th Grade

15 questions

How Matter Can Change Quiz

Quiz

•

6th Grade - University

Popular Resources on Wayground

15 questions

Fractions on a Number Line

Quiz

•

3rd Grade

20 questions

Equivalent Fractions

Quiz

•

3rd Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

54 questions

Analyzing Line Graphs & Tables

Quiz

•

4th Grade

$fractions$

22 questions

fractions

Quiz

•

3rd Grade

20 questions

Main Idea and Details

Quiz

•

5th Grade

20 questions

Context Clues

Quiz

•

6th Grade

15 questions

Equivalent Fractions

Quiz

•

4th Grade

Discover more resources for Science

20 questions

Cell Organelles and Functions

Quiz

•

6th - 8th Grade

33 questions

Grade 6 Quarter 3 PMA 5 Review

Quiz

•

6th - 8th Grade

10 questions

Exploring the Rock Cycle: Types and Formation

Interactive video

•

6th - 8th Grade

10 questions

Exploring the Layers of the Earth

Interactive video

•

6th - 10th Grade

14 questions

Biodiversity and Sustainability Quiz

Quiz

•

8th Grade

20 questions

Heredity Punnett square review

Quiz

•

8th Grade

23 questions

Newton's 3 Laws of Motion

Quiz

•

8th Grade

10 questions

Exploring the Rock Cycle

Interactive video

•

6th - 8th Grade

Understanding Chemical Equations Quiz

20 questions

Which of the following is the correct chemical formula for water?

Which equation is balanced?

Which of the following equations is unbalanced?

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science