Free Printable WorksheetScienceGrade 8Science CurriculumPS.8.31

8.31 Count Atoms from Chemical Formulas Worksheet

Download our free printable Grade 8 Science worksheet on 8.31 Count Atoms from Chemical Formulas. Ideal for classroom practice, homeschool learning, independent homework, and standardized test preparation. Available in both print-ready PDF and editable DOCX formats.

Choose your preferred download format:

100% Free • No registration or login required • Instant file access

Prefer interactive practice with instant grading and explanations?Practice Count Atoms from Chemical Formulas Online

Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 8 Science worksheet provides structured practice on 8.31 Count Atoms from Chemical Formulas. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Count Atoms from Chemical Formulas - Determine the number of each atom type in simple formulas and connect to conservation during reactions (qualitative)? (NGSS MS‑PS1‑1/2; CCSS RST.6–8.4; TEKS §112.28 Grade 8; FL NGSSS; VA SOL; MA STE)

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Grade 8

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 8.31 Count Atoms from Chemical Formulas skill assessments:

Problem 1Difficulty: Mastery
In 3BaBr2, how many Barium (Ba) atoms are represented?
A1
B4
C2
D3
Solution & Explanation:Read the subscripts and any coefficient in 3BaBr2. The total number of Ba atoms is 3.
Problem 2Difficulty: Mastery
A student is checking the formula 2ZnBr2. How many Br (Br) atoms should the student count?
A4
B2
C5
D3
Solution & Explanation:In 2ZnBr2, subscripts apply to the element or group before them, and a leading coefficient multiplies the whole formula. The count of Br is 4.
Problem 3Difficulty: Mastery
How many total atoms are represented by 3CuBr2?
A10
B9
C8
D18
Solution & Explanation:Add the atoms of each element in 3CuBr2: 3 + 6 = 9 total atoms.

Want more practice questions with step-by-step guidance?

Practice All Questions Online

Frequently Asked Questions

Common questions about printing, using, and solving this worksheet

QHow do I download and print this 8.31 Count Atoms from Chemical Formulas worksheet?

Click either the "Download PDF" or "Download DOCX" button at the top of the page. You can print the PDF directly from your browser or edit the DOCX file in Microsoft Word or Google Docs to tailor the questions to your students.

QIs this 8.31 Count Atoms from Chemical Formulas worksheet free for teachers and homeschoolers?

Yes! All learning materials, worksheets, and practice resources on Free K12 Practice are 100% free for teachers, students, parents, tutors, and homeschooling families for non-commercial educational use. No account or subscription is required.

QCan students practice 8.31 Count Atoms from Chemical Formulas online with instant feedback?

Yes! In addition to this printable worksheet, students can practice 8.31 Count Atoms from Chemical Formulas interactively on our platform with automated grading, instant score tracking, and detailed step-by-step solutions.

QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Grade 8 Science students. It aligns with educational standard PS.8.31 (Interpret chemical formulas to determine the number and types of atoms present.).

Related Grade 8 Science Resources

Continue learning with complementary skill worksheets and online practice