Material properties and matter interactions take centre stage in this Grade 7 Science learning stations resource, where students use evidence about real-world materials to distinguish physical properties from chemical properties and make informed decisions about material identification, use, and separation.

Rather than treating material properties as isolated definitions, the activity connects scientific observations to practical questions: Which properties help identify an unknown material? How can density, melting point, solubility, and electrical conductivity help compare substances? What evidence indicates that a material may react chemically?

Explore the evidence behind material choices

Students work with material-property examples and consider how different properties provide useful evidence. The activity focuses on the distinction between physical and chemical properties, the comparison of materials, and the application of property evidence to practical situations.

• Physical and chemical properties: Distinguish properties that can be observed or measured without changing a substance's identity from properties describing its ability to undergo chemical change.
• Comparing materials: Use density, melting point, solubility, and electrical conductivity to evaluate differences between materials.
• Chemical reactivity: Consider how evidence of reactivity helps distinguish materials and assess their possible uses.
• Evidence-based decisions: Use observed or provided property information to identify materials, predict suitable applications, and consider appropriate separation methods.

These skills give students a practical foundation for reasoning about matter and its interactions, with an emphasis on supporting conclusions using relevant property evidence rather than relying on guesses.

What is included?

• Station cards: Provide the case-study material for students to examine as they move through the learning stations.
• Station recording sheet: Gives students a place to record key information from their station work.
• Station wrap-up: Provides a concluding activity for students to bring together their thinking about material properties.
• Answer Key PDF with Teacher Guide: Includes learning objectives, teaching tips, discussion questions, and common mistakes to support lesson preparation and classroom discussion.

How to use the stations in class

Place the station cards around the classroom and organise students into small groups. Groups begin at different stations, examine the case-study information, and record their findings on their own recording sheets rather than writing on the cards. Set a rotation time that suits your class, then have groups move to the next station until everyone has visited each one.

Finish with a class discussion in which students compare their conclusions and explain which material properties support their decisions. The teacher guide provides discussion prompts and teaching tips to help address misconceptions about physical properties, chemical properties, and reactivity.

Designed for purposeful Grade 7 science practice

This material properties activity gives teachers a structured way to connect the study of matter with scientific reasoning. It can be used during a unit on matter and its interactions, as collaborative classroom practice, or as a review of physical properties, chemical properties, and material identification. NGSS is the named framework for the resource; no specific NGSS performance code is supplied in the resource details.

Students practise comparing evidence, explaining material choices, and applying scientific properties to real-world decisions, while the included teacher guidance helps you prepare and lead the follow-up discussion.