Free Printable WorksheetScienceGrade 11Science CurriculumNGSS HS-PS1-1, HS-PS1-2, HS-PS1-3; AP Chem Unit 2; Pre-AP Unit 2; CCSS RST.11-12.7 and HSN-Q.A.1

11.39 Lewis Structures and Octet Rules Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Chemistry Science worksheet provides structured practice on 11.39 Lewis Structures and Octet Rules. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Lewis Structures and Octet Rules: Draw and interpret Lewis structures for atoms, ions, and molecules using valence electrons, octet rules, and bonding pairs/lone pairs.. Aligned to NGSS, CCSS, AP Chemistry/Pre-AP Chemistry, and representative state chemistry framework crosswalks NGSS HS-PS1-1, HS-PS1-2, HS-PS1-3; AP Chem Unit 2; Pre-AP Unit 2; CCSS RST.11-12.7 and HSN-Q.A.1 - Lewis Structures and Octet Rules Chemistry Standards Crosswalk: National: NGSS HS-PS1-1, HS-PS1-2, HS-PS1-3; AP Chem Unit 2; Pre-AP Unit 2; CCSS RST.11-12.7 and HSN-Q.A.1. State frameworks: TX TEKS 112.43(c)(7); MA HS.CHEM.1.1; FL SC.912.P.8.6; CA/NY/NJ HS-PS1-2/3; GA Chemistry bonding standards; VA Chemistry bonding standards.

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

Chemistry

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 11.39 Lewis Structures and Octet Rules skill assessments:

Problem 1Difficulty: Mastery

Use the tetrafluoroethylene models in the image. Which model correctly represents C2F4?

Atetrafluoroethylene Lewis model A

Btetrafluoroethylene Lewis model B

Ctetrafluoroethylene Lewis model C

Dtetrafluoroethylene Lewis model D

Solution & Explanation:C2F4 has a double bond between the two carbon atoms and two fluorine atoms bonded to each carbon. Each fluorine has three lone pairs.

Problem 2Difficulty: Mastery

In fluoroform, CHF3, which Lewis-structure description is correct?

ACarbon has three single bonds and one lone pair, and fluorine has two lone pairs.

BCarbon has one double bond to each fluorine and no C-H bond.

CCarbon has four single bonds, and each fluorine has three lone pairs.

DHydrogen is central with bonds to carbon and fluorine atoms.

Solution & Explanation:Carbon is central in CHF3 with one C-H bond and three C-F bonds. Each fluorine forms one bond and keeps three lone pairs.

Problem 3Difficulty: Mastery

Carbonyl sulfide, OCS, is commonly drawn as O=C=S. Which lone-pair statement is correct?

AO has one lone pair, S has three lone pairs, and C has none.

BO has two lone pairs, S has two lone pairs, and C has none.

CO has three lone pairs, S has one lone pair, and C has one.

DO, C, and S each have two lone pairs.

Solution & Explanation:OCS has two double bonds to carbon. Oxygen and sulfur each keep two lone pairs, while carbon completes its octet through bonding.

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Chemistry Science students. It aligns with educational standard NGSS HS-PS1-1, HS-PS1-2, HS-PS1-3; AP Chem Unit 2; Pre-AP Unit 2; CCSS RST.11-12.7 and HSN-Q.A.1 (National: NGSS HS-PS1-1, HS-PS1-2, HS-PS1-3; AP Chem Unit 2; Pre-AP Unit 2; CCSS RST.11-12.7 and HSN-Q.A.1. State frameworks: TX TEKS 112.43(c)(7); MA HS.CHEM.1.1; FL SC.912.P.8.6; CA/NY/NJ HS-PS1-2/3; GA Chemistry bonding standards; VA Chemistry bonding standards.).