Free Printable WorksheetScienceGrade 6Science CurriculumMS-PS1-1

6.35 Elements, Compounds, and Simple Molecules Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 6 Science worksheet provides structured practice on 6.35 Elements, Compounds, and Simple Molecules. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Elements, Compounds, and Simple Molecules - Which diagram or model best shows elements, compounds, and simple molecules? (NGSS MS‑PS1‑1)

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 6

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 6.35 Elements, Compounds, and Simple Molecules skill assessments:

Problem 1Difficulty: Mastery

Which sentence best summarizes the difference among elements, compounds, and simple molecules?

AElements always have one atom, compounds never form molecules, and simple molecules are mixtures.

BElements contain one kind of atom, compounds contain different kinds of bonded atoms, and simple molecules are small bonded groups of atoms.

CElements and compounds are the same if they are small enough.

DSimple molecules always contain three atom types.

Solution & Explanation:Choice B correctly describes each idea. Elements are based on atom type, compounds are based on different atoms bonded together, and simple molecules are small groups of bonded atoms.

Problem 2Difficulty: Mastery

A sample was filtered so that only identical AB molecules remained. Which diagram best shows the cleaned sample?

Aonly AB bonded pairs repeated

BAB bonded pairs mixed with single A atoms

CA2 bonded pairs mixed with B2 bonded pairs

Dseparate A atoms and separate B atoms together

Solution & Explanation:If only identical AB molecules remain, the sample is now a pure compound. The correct diagram must show one type of bonded AB particle and nothing else.

Problem 3Difficulty: Mastery

Which explanation best distinguishes CO from CO2?

ACO and CO2 are the same because both have carbon and oxygen.

BThe atom ratio in each molecule is different, so they are different compounds.

CCO is an element because it has two atoms.

DCO2 is a mixture because it has three atoms.

Solution & Explanation:The substances contain the same elements, but not in the same ratio. Different atom ratios make different compounds.

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Frequently Asked Questions

Common questions about printing, using, and solving this worksheet

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QIs this 6.35 Elements, Compounds, and Simple Molecules 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 6 Science students. It aligns with educational standard MS-PS1-1 (NGSS MS-PS1-1. Which diagram or model best shows elements, compounds, and simple molecules? Students use particle models to describe how atoms combine in simple substances.).