Electron Configuration, Bonding & Periodic Trends gives Grade 11 Science students structured practice connecting atomic structure to chemical behavior, with a focus on electron configurations, bonding, periodic trends, molecular geometry, polarity, and observable properties.

The resource moves from atomic structure into molecular behavior so students can connect microscopic ideas to patterns they can observe and explain. Students examine quantized energy levels, the Bohr model, orbitals and electron shells, isotopes, valence electrons, and spectroscopic lines. They also compare ionic, covalent, and metallic bonding and use periodic trends to reason about atomic size, ion formation, and reactivity.

What students practise

Students interpret how electron configuration influences an element's chemical behavior, explain why atomic size changes across periods and down groups, and distinguish electron transfer from electron sharing in ionic and covalent bonding. They also consider how metallic bonding relates to electrical conductivity and how molecular geometry can affect polarity, intermolecular attractions, and macroscopic properties.

The worksheet includes a reading passage, multiple-choice questions, true/false statements, short responses, matching, a cloze passage, an extended-response question, and a “Did You Know?” component. The tasks require students to recall key ideas, interpret scientific relationships, explain cause and effect, and connect atomic-level structure with chemical properties.

Included for teaching and review

• ✔️ Student worksheet focused on atomic structure, bonding, and periodic trends
• ✔️ Separate PDF answer key for checking student responses
• ✔️ Student Notes & Lesson Summary supplement for review and reinforcement
• ✔️ Separate Teacher Guide with Learning Objectives, Teaching Tips, Discussion Questions, and Common Mistakes

Classroom use

Use this chemistry worksheet for guided practice, independent work, lesson review, formative assessment, or preparation for extended discussion. The combination of selected-response and written tasks gives students opportunities to work with scientific vocabulary while explaining relationships among electron structure, bonding, periodic behavior, molecular shape, and observable properties.

Designed for Grade 11 Science and identified with an Ontario framework, this resource provides a focused way to reinforce core chemistry concepts while giving teachers an answer key and supporting materials for instruction and review.