Metals and Non-metals

Overview

This 65-minute lesson introduces Year 8 students to the periodic table with a focus on identifying metals and non-metals, understanding their key properties, and linking these properties to practical uses. The lesson aligns explicitly with the National Curriculum for England, reinforcing scientific knowledge, enquiry skills, and application through varied, interactive activities.

National Curriculum Links

Programme of Study (KS3 Science - Chemistry):

• Atoms, elements and compounds: Describe the difference between metals and non-metals.
• The Periodic Table: Recognise where metals and non-metals are located and classify elements accordingly.
• Properties and uses of materials: Understand how properties of materials determine their uses.

Specific Learning Objectives:

• P2.3a: Identify metals and non-metals on the periodic table.
• P2.3b: Describe physical and chemical properties of metals and non-metals.
• P2.3c: Explain how properties influence practical uses of metals and non-metals.

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Learning Objectives

By the end of this lesson, students will be able to:

1. Accurately locate metals and non-metals on a simplified periodic table.
2. Describe at least three physical or chemical properties each for metals and non-metals.
3. Link specific properties to real-world uses (e.g., conductivity of copper for wiring).
4. Demonstrate understanding through a class activity and a mini-assessment.

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Resources

• Projector and computer
• Printed simplified periodic tables (colour-coded) for each student
• Whiteboard and markers
• Sample materials: metal spoon, plastic ruler, aluminium foil, rubber, copper wire, etc.
• "Property-Use" matching cards
• Assessment worksheet (10 minutes)

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Lesson Structure

1. Starter Activity (10 minutes)

Engage & Assess Prior Knowledge

• Begin with a quick quiz on the whiteboard: “What do you already know about metals and non-metals?”
• Students write 2 properties of metals and 2 properties of non-metals silently on mini whiteboards or paper.
• Discuss some examples aloud, correcting misconceptions.

2. Introduction & Explanation (15 minutes)

Where are metals and non-metals on the Periodic Table?

• Display a large colour-coded periodic table highlighting metals (left and centre), non-metals (top right), and metalloids.
• Explain groups and periods briefly relevant to their locations.
• Emphasise metals on the left/middle, non-metals top right, with examples (e.g., Iron, Zinc vs. Oxygen, Chlorine).

Key properties:

• Use a two-column table on the board for 'Metals' and 'Non-metals' physical properties:
  • Metals: lustrous, malleable, ductile, good conductors of heat/electricity, high melting points, tend to lose electrons.
  • Non-metals: dull, brittle (if solid), poor conductors, lower melting points (except carbon), tend to gain/share electrons.
• Link properties to uses in brief examples (e.g., copper for wiring, graphite for pencils, aluminium for foil).

3. Interactive Group Activity (20 minutes)

Property-Use Matching Challenge

• Divide class into 7 groups of 4 students each (plus one group of 5).
• Distribute sets of cards labelled with either a property or a use (e.g., “good conductor of electricity” / “electric wiring”).
• Groups match properties to appropriate uses, then link these matches to real elements on their periodic tables.
• Students use sample materials to justify their matches (e.g., “This copper wire feels sturdy and allows electricity to pass”).

Extension challenge: Groups list additional uses for metals/non-metals not on their cards and explain why.

4. Plenary & Review (10 minutes)

• Each group presents one matched property-use pair and discusses why it makes sense based on properties.
• Class provides peer feedback and the teacher clarifies any errors or misconceptions.
• Teacher asks quick recall questions about location on the periodic table and example elements.

5. Assessment (10 minutes)

• Individual written worksheet with short-answer questions:
  1. Identify whether the element named is a metal or non-metal.
  2. Write two properties of metals.
  3. Give two uses of non-metals and explain how their properties relate.
  4. Label parts of a simplified periodic table showing metals and non-metals.
• Marking to be done by teacher for progression tracking.

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Differentiation

• Lower ability: Provide partially completed matching cards and simplified periodic tables with key examples highlighted.
• Higher ability: Challenge with metalloids properties and their intermediate characteristics. Include extension question on why some elements have mixed properties.
• Use peer support within groups to scaffold learning.

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Assessment for Learning

• Formative: Starter quiz, group activity, plenary Q&A.
• Summative: Worksheet marked for understanding of location, properties, and applications.

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Cross-Curricular Connections

• Maths: Interpreting tables, patterns, and grouping.
• Design & Technology: Material properties linked to practical design choices.
• Literacy: Scientific vocabulary development and explanation skills.

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Homework Suggestion

Research one metal and one non-metal, summarising their properties and everyday uses in a short paragraph for the next lesson. Encourage use of vocabulary learned today.

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Final Reflection for Teachers

This lesson encourages active participation, peer collaboration, and real-world connections. It opens opportunities for cross-topic links in chemistry and material science while fostering key scientific skills of observation, classification, and explanation in line with the national curriculum. The “Property-Use Matching Challenge” provides a tactile and visual approach that can engage and ‘wow’ different learners.