Metals and Non-metals

Active learning helps students connect abstract periodic trends to tangible evidence. Physical tests and collaborative ranking let them see how electron arrangement shapes behavior, making metallic bonding and conductivity real rather than memorized.

• Year 9
• Science
• 4 activities
• 20 min–45 min

Learning Objectives

1. Compare the physical properties of at least five common metals and five common non-metals, identifying at least three characteristic differences.
2. Explain the relationship between metallic bonding and the observed physical properties of metals, such as conductivity and malleability.
3. Classify an unknown element as a metal or non-metal based on a provided list of its physical and chemical properties.
4. Analyze the trend in reactivity of alkali metals down Group 1 of the periodic table, explaining the underlying atomic structure reasons.
5. Predict the likely products of reactions between metals and acids or non-metals and metals.

Stations Rotation

⏱ 45 min·Small Groups

Stations Rotation: Physical Property Tests

Prepare stations for lustre (torch on samples), conductivity (simple circuits with bulbs), malleability (bend wires or hammer foil safely), and density (weigh equal volumes). Small groups spend 8 minutes per station, sketching observations and noting metal or non-metal traits. Conclude with class share-out.

Prepare & details

Compare the characteristic physical properties of metals and non-metals.

Facilitation Tip: During Station Rotation, circulate with a conductivity tester and a magnet to model precise observation and questioning at each table.

Setup: Tables/desks arranged in 4-6 distinct stations around room

Materials: Station instruction cards, Different materials per station, Rotation timer

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Stations Rotation

⏱ 30 min·Pairs

Pairs: Metal Reactivity Series

Provide magnesium ribbon, zinc granules, and copper turnings with dilute hydrochloric acid in test tubes. Pairs add equal masses to acid, time hydrogen bubble rates, and rank reactivity. Discuss why magnesium reacts fastest, linking to group trends.

Prepare & details

Explain how the reactivity of metals changes across a period and down a group.

Facilitation Tip: When pairs rank the reactivity series, insist they record visible reactions like bubble formation or color change on their whiteboard before ordering the samples.

Setup: Tables/desks arranged in 4-6 distinct stations around room

Materials: Station instruction cards, Different materials per station, Rotation timer

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Stations Rotation

⏱ 20 min·Whole Class

Whole Class: Property Prediction Game

Display projected lists of properties (e.g., 'brittle, poor conductor'). Students hold up 'metal' or 'non-metal' cards, then justify in pairs. Reveal element identity and vote on correct predictions, addressing trends across periods.

Prepare & details

Predict whether an unknown element is a metal or non-metal based on its properties.

Facilitation Tip: In the Property Prediction Game, pause after each clue to ask groups to justify their guesses using at least one property they remember from earlier tests.

Setup: Tables/desks arranged in 4-6 distinct stations around room

Materials: Station instruction cards, Different materials per station, Rotation timer

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Stations Rotation

⏱ 25 min·Individual

Individual: Element Classification Chart

Students receive data cards with properties for 10 elements. They sort into metal/non-metal columns, predict positions in periodic table, and explain reactivity based on group/period. Share one challenging example with class.

Prepare & details

Compare the characteristic physical properties of metals and non-metals.

Facilitation Tip: As students fill their Element Classification Charts, listen for the language of evidence (e.g., ‘I saw it bend, so it must be malleable’).

Setup: Tables/desks arranged in 4-6 distinct stations around room

Materials: Station instruction cards, Different materials per station, Rotation timer

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Teaching This Topic

Teachers often start with the physical tests to build concrete experience before introducing bonding theory. Avoid rushing to definitions; let students notice patterns first, then name them. Research shows that combining visual tests with verbal reasoning strengthens memory of periodic trends more than lectures alone.

What to Expect

Students explain why metals conduct heat or bend while non-metals shatter, and they justify their classification using test results and reactivity data. Success looks like clear links between observed properties and bonding models.

Watch Out for These Misconceptions

Common Misconception

During Station Rotation, watch for students assuming all shiny samples are magnetic or that magnetism is a universal metal trait.

What to Teach Instead

Place a labeled magnet at the magnetism station and ask each pair to test every shiny sample, recording which ones respond and discussing why only certain metals attract.

Common Misconception

During Pairs: Metal Reactivity Series, watch for students ordering metals left to right across a period instead of by observed bubble rate or color change.

What to Teach Instead

Have pairs write each reaction result on a sticky note, then arrange the notes on a whiteboard in order of most to least reactive before transferring to their chart.

Common Misconception

During Property Prediction Game, watch for students saying non-metals never conduct electricity at all.

What to Teach Instead

Show the graphite sample during the game and ask groups to test its conductivity, then discuss how structure—not category—determines behavior.

Assessment Ideas

Quick Check

After Station Rotation, present a table with three unknown elements and ask students to label each as ‘Metal’ or ‘Non-metal’ and circle one property from their test results that supports their choice.

Discussion Prompt

During the Whole Class Property Prediction Game, ask students to imagine they are choosing a pot material and justify their choice using two specific properties they tested earlier.

Exit Ticket

After students complete their Element Classification Charts, ask them to write one distinguishing physical property and one chemical reactivity difference on a card before leaving.

Extensions & Scaffolding

• Challenge: Ask early finishers to design a poster that explains why graphite conducts electricity but diamond does not, including labeled diagrams of electron arrangements.
• Scaffolding: Provide a word bank (lustre, ductile, sonorous, brittle) and sentence stems on the chart for students who struggle to articulate differences.
• Deeper exploration: Invite students to research one metal and one non-metal element, then compare their real-world uses to their properties and bonding.

Key Vocabulary

Lustre	The way light reflects off the surface of a substance. Metals typically have a shiny, lustrous appearance, while non-metals are often dull.
Malleability	The ability of a solid material to bend or be hammered into thin sheets without breaking. Metals are generally malleable, whereas non-metals are brittle.
Ductility	The ability of a solid material to be stretched into a wire. Metals exhibit ductility due to their bonding structure.
Sonority	The property of making a deep, ringing sound when struck. Metals are often sonorous, unlike most non-metals.
Reactivity Series	A list of metals arranged in order of their reactivity. This series helps predict how metals will react with other substances like acids or water.