Free Printable WorksheetScienceGrade 8Science CurriculumMS-PS1-1

8.33 Model Extended Structures (Lattices, Networks) Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 8 Science worksheet provides structured practice on 8.33 Model Extended Structures (Lattices, Networks). Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Model Extended Structures (Lattices, Networks) - Which interpretation best repeated unit patterns in extended structures (e.g., salt crystals, polymers) and relate structure to properties? (NGSS MS‑PS1‑1; CCC: Structure/Function; 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 8.33 Model Extended Structures (Lattices, Networks) skill assessments:

Problem 1Difficulty: Mastery

Use the planned four-model comparison. A new sample stays solid at high temperature, scratches glass, and is not flexible. Which model best fits the sample?

Athe alternating ionic lattice model

Bthe long linear polymer-chain model

Cthe metallic lattice model

Dthe rigid 3D network model

Solution & Explanation:A sample that stays solid at high temperature, scratches glass, and is not flexible is best matched by a rigid 3D network of strongly connected atoms.

Problem 2Difficulty: Mastery

Why are network solids often difficult to melt or dissolve?

Athey contain no particles

Bthey are already liquids

Cthe particles are connected in a strong pattern across the material, so many interactions must be overcome

Dmelting depends only on color

Solution & Explanation:In a network solid, many strong connections extend through the material. A lot of those interactions must be overcome to melt or dissolve it.

Problem 3Difficulty: Mastery

Two materials contain only carbon. One is used in drill bits, and the other is used in pencil cores. Which explanation is best?

Athe materials are identical because they have the same atoms

Bdifferent particle arrangements can produce very different properties even with the same atoms

Cone sample contains no structure

Dboth must melt at the same temperature

Solution & Explanation:The same element can form different structures. Diamond and graphite both contain carbon, but their different arrangements lead to very different properties.

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Frequently Asked Questions

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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 (This set helps learners identify repeating units in crystals and polymers, compare lattice and network models, and connect structure to hardness, flexibility, conductivity, and melting behavior.).