Chemical Bonding

Grade 10 · Chemistry

Semester 2 | Period 4 | Week 22

Download the Lessonotes Mobile Liberia app for faster lesson access on Android and iPhone.

Get it on Google Play Get it on the Apple App Store

Subject: Chemistry

Semester: 2

Period: 4

Week: 22

School Name:
Teacher’s Name:
Subject: Chemistry
Grade Level: Grade 10
Week & Period: Week 22, Period IV
Date:
Topic: Chemical Bonding
Sub-topic: Metallic and Coordinate Bonding

  • Metallic Bonding: Factors influencing formation, properties of metals
  • Coordinate bonding
  • Comparison of all bond types

 

Learning Objectives:

  • Discuss metallic bonding: factors influencing its formation and properties of metals
  • Explain coordinate (dative) bonding
  • Compare all bond types

Previous Knowledge:
Learners know ionic and covalent bonding, molecular geometry.

Instructional Materials:

  • Metallic bonding diagrams
  • Lewis structures showing coordinate bonds
  • Comparative charts of bond types

Anticipation (Warm-Up) – 5 minutes
Ask:

  • "What makes metals good conductors?"
  • "Have you heard of a bond where both electrons come from the same atom?"

Building Knowledge (Main Lesson) – 25 minutes

  1. Metallic bonding: sea of electrons model, factors favoring metallic bonds
  2. Properties of metals related to bonding (conductivity, malleability, ductility)
  3. Coordinate covalent bonding: definition, examples (e.g., NH₃ + BF₃)
  4. Comparison of ionic, covalent, metallic, and coordinate bonds

Learners’ Activities:

  • Draw diagrams illustrating metallic bonding and coordinate bonds
  • List properties of metals explained by metallic bonding
  • Group comparison of bonding types including strengths and examples

Consolidation – 10 minutes
Questions:

  • What is metallic bonding?
  • How does coordinate bonding differ from regular covalent bonding?
  • Compare properties of ionic, covalent, and metallic compounds.

Homework / Assignment:

  • Write a note on metallic bonding and its relation to metal properties
  • Give two examples of coordinate covalent bonds

Notes – Detailed and Explained:

  • Metallic bonding involves a lattice of positive ions in a “sea” of delocalized electrons.
  • This explains metals’ conductivity and malleability.
  • Coordinate bonds form when one atom donates both electrons in a shared pair.
  • Bond types differ in electron sharing and properties they produce in compounds.

Expanded Notes / Instructions:

  • Use analogies to explain electron delocalization in metals.
  • Provide examples and practice for identifying coordinate bonds.
  • Reinforce the comparison of bond types to link theory to properties.

Inclusive / Differentiation:

  • Use visual aids and hands-on activities.
  • Provide guided worksheets for identifying bond types.
  • Encourage learners to teach peers in group work.

Teacher’s Reflection:

  • Did learners understand metallic and coordinate bonding?
  • Were comparisons between bond types clear and accurate?