Lesson Plan

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Lesson Plan
Grade: Date: 25/02/2026
Subject: Chemistry
Lesson Topic: Compare the general physical properties of metals and non-metals, including: (a) thermal conductivity (b) electrical conductivity (c) malleability and ductility (d) melting points and boiling points
Learning Objective/s:
  • Describe the differences in thermal and electrical conductivity between metals and non‑metals.
  • Explain why metals are malleable and ductile while non‑metals are brittle.
  • Compare typical melting and boiling points of metals and non‑metals and relate them to bonding type.
  • Apply the properties to predict suitable real‑world uses for metals and non‑metals.
Materials Needed:
  • Projector or interactive whiteboard
  • Printed comparison worksheet
  • Samples of metal (copper wire, aluminium foil) and non‑metal (plastic rod, wood block)
  • Thermometer or infrared sensor (optional demo)
  • Whiteboard markers
  • Exit‑ticket slips
 Introduction:
Begin with a quick demonstration: hold a metal spoon and a plastic spoon in hot water and ask students which feels hotter. Recall that conductivity relates to free electrons, a concept covered last lesson. Today they will identify how these properties differentiate metals from non‑metals and articulate criteria for selecting materials.
Lesson Structure:
  1. Do‑now (5’) – Students complete a short KWL chart on what they know about metal and non‑metal properties.
  2. Mini‑lecture with slides (10’) – Explain thermal & electrical conductivity, linking to free electrons.
  3. Hands‑on demo (10’) – Test heat transfer using metal vs plastic rods and discuss observations.
  4. Guided practice (10’) – Complete the comparison worksheet in pairs, filling the table of properties.
  5. Concept check (5’) – Quick quiz using clickers or show of hands on key statements.
  6. Summary discussion (5’) – Students summarise the reasons for differences and suggest everyday applications.
Conclusion:
Review the four property groups and how they relate to atomic structure. Students answer an exit‑ticket question: “Give one example of a material choice based on conductivity or melting point.” Assign homework to research a real‑world product that relies on a specific metal property.