Free Printable WorksheetScienceGrade 8Science CurriculumMS-PS1-1

8.19 Elements, Compounds and Mixtures Worksheet

Download our free printable Grade 8 Science worksheet on 8.19 Elements, Compounds and Mixtures. Ideal for classroom practice, homeschool learning, independent homework, and standardized test preparation. Available in both print-ready PDF and editable DOCX formats.

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 8 Science worksheet provides structured practice on 8.19 Elements, Compounds and Mixtures. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Elements, Compounds and Mixtures - Which classification best matter and explain differences among elements, compounds, and mixtures using symbols, formulas, and models? (NGSS MS‑PS1‑1; DCI PS1.A; SEP: Modeling; CCC: Structure/Function; 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 8.19 Elements, Compounds and Mixtures skill assessments:

Problem 1Difficulty: Mastery

Which model best represents a sample that is a pure element but not single separate atoms?

Aa repeating pattern of two different atoms

Bidentical diatomic molecules made of the same element

Csingle atoms and molecules mixed together

Dtwo different molecules in equal amounts

Solution & Explanation:A pure element can exist as molecules if each molecule contains only one kind of atom, such as O2 or N2. The sample is still an element because only one element is present.

Problem 2Difficulty: Mastery

An engineer needs a material with exactly the same composition in every batch. Which choice best fits that need?

Aseawater

Bdistilled water

Cbrass

Dtrail mix

Solution & Explanation:Distilled water is a pure compound with a fixed composition. The other choices are mixtures whose composition can vary.

Problem 3Difficulty: Mastery

A student groups air, brass, and salt water under one heading and gold, sulfur, and oxygen gas under another. Which headings are best?

Amixtures and elements

Bcompounds and mixtures

Celements and compounds

Dsolutions and suspensions

Solution & Explanation:Air, brass, and salt water are mixtures. Gold, sulfur, and oxygen gas each contain only one kind of atom, so they are elements.

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Frequently Asked Questions

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QIs this 8.19 Elements, Compounds and Mixtures worksheet free for teachers and homeschoolers?

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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 MS-PS1-1 (Learners identify pure substances, distinguish homogeneous and heterogeneous mixtures, interpret chemical symbols and formulas, and use particle models to explain how matter is organized.).