Lesson Plan: Metallic Bonding Chemistry • 7th Grade
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to describe metallic bonding and the effect it has on the physical and chemical properties of metals.
Objectives
Students will be able to
- describe how metals form giant lattice structures arranged in layers of regular patterns,
- describe the bonding in metals as a structure of positive ions surrounded by a sea of delocalized valence electrons,
- explain the term delocalized as referring to free electrons that can move around the metal lattice,
- describe how electrostatic interactions between the positive ions and delocalized valence electrons give rise to metallic bonding,
- describe how metallic bonding is responsible for the properties of metals, such as having high melting points and being malleable, ductile, and good conductors of heat and electricity,
- briefly explain what an alloy is (alloys are covered in a separate lesson).
Prerequisites
Students should already be familiar with
- types of chemical bonding.
Exclusions
Students will not cover
- alloys in detail,
- details or calculations of conductivity,
- uses of metals.
