Lesson Plan

• Describe the physical‑property trends (atomic radius, ionisation energy, melting point) for the alkali metals, alkaline‑earth metals, halogens, noble gases and selected transition metals.
• Explain the characteristic reactions of each element group, including reactions with water, oxygen, halogens and ligand coordination.
• Predict reactivity patterns from periodic trends and write balanced equations for representative reactions.
• Compare common oxidation states of transition metals and discuss their role in complex formation and catalysis.

• Projector and screen for slides/diagrams
• Whiteboard and markers
• Periodic‑table handouts
• Worksheet with trend tables and reaction equations
• Laptop with presentation
• Safety goggles (for video demonstration)
• Model kits for coordination complexes (optional)

Begin with a short video of a sodium‑water reaction to capture interest and link to everyday phenomena such as fireworks. Ask students to recall what they know about group trends in the periodic table. State that by the end of the lesson they will be able to describe trends, explain key reactions and predict behaviour of selected elements.

1. Do‑now (5') – Quick quiz on group numbers, typical charges and one trend for each group.
2. Mini‑lecture (15') – Present physical‑property trends for Groups 1, 2, 17, 18 and transition metals using the provided tables and diagrams.
3. Group activity (10') – Students analyse the reaction tables, complete a worksheet matching elements to their characteristic reactions.
4. Video demonstration (5') – Safe clip of sodium reacting with water; discuss observations and link to reactivity trend.
5. Transition‑metal focus (10') – Discuss variable oxidation states, show a coordination‑complex model, and work through a redox example.
6. Check for understanding (5') – Exit‑ticket: write one balanced equation for a chosen element and note the trend that explains its reactivity.

Summarise the key trends across the groups and emphasise how these govern the reactions studied. Collect exit tickets to gauge understanding and assign homework: complete the worksheet by predicting reactions for an unstudied element from each group.