Help your students build real understanding of lewis dot structures through ninety questions that move from basic recognition to genuine reasoning about chemistry concepts.

The set includes questions like "For which of the following species would you expect an expanded octet?", "Which molecule has a resonance structure?", and "What is the total number of valence electrons in a molecule of water (H₂O)?"

What's Inside?

• 30 Multiple Choice questions as a separate print ready PDF worksheet
• 30 True or False questions as a separate print ready PDF worksheet
• 30 Short Answer questions as a separate print ready PDF worksheet
• Includes Answer Key with Explanations for all 90 questions
• 6 print ready PDF files, 27 pages in total

Because the three worksheets share the same content in three different formats, you can spread them across the week: one for diagnosis, one for practice, and one for assessment, without repeating a single question.

Ways to Use This Resource

• Homework or review before a test
• Bell ringers and warm ups during the unit
• No prep cover lesson for a substitute teacher
• First look diagnostic to plan your unit
• Self checking practice, since every answer key includes explanations

This set is part of a complete NGSS aligned chemistry unit. The unit also covers Chemical Bonding Overview, Ionic Bonds Quiz, Covalent Bonds Quiz, Electronegativity and Bond Type, Intermolecular Forces, and 3D Molecular Shapes, all in the same three worksheet format, so your classroom routine stays familiar while the topic changes.

Suitable for Grade 9-12 chemistry classes, and for NGSS aligned review at any point in the school year. This set is aligned to NGSS standard HS-PS1-3.