What students learn in AC9S7U06
This unit helps students build a clear, usable understanding of A particle model to describe differences between pure substances and.... The goal is not to memorise one answer pattern. Students should be able to explain the idea, recognise it in a new example and apply it in a short practice or worksheet task.
- Start with the main idea: use a particle model to describe differences between pure substances and mixtures and apply understanding of properties of substances to separate mixtures.
- Use concrete examples, pictures, oral explanation and short written responses before moving to independent practice.
- using representations of particles to show the difference between samples of pure substances and mixtures, and identifying examples of each examining different solutions and identifying the solvent and solute
- Finish with mixed questions so students must choose the correct strategy rather than copy the last example.
Curriculum coverage and elaborations
The content description and elaborations below show the curriculum ideas taught in this unit. Items marked as teaching context support lesson planning but may not appear in the initial eight-question activity.
- Content description: use a particle model to describe differences between pure substances and mixtures and apply understanding of properties of substances to separate mixtures
- E1: using representations of particles to show the difference between samples of pure substances and mixtures, and identifying examples of each
- E2: examining different solutions and identifying the solvent and solute
- E3: investigating and using a range of physical separation techniques such as filtration, decantation, evaporation, crystallisation, chromatography and distillation
- E4: exploring and comparing separation methods used in a variety of situations such as in the home, recycling industries and purifying water
- E5: analysing how the physical properties of substances in mixtures, such as particle size, density or volatility, determine the separation technique used
- E6: investigating separation techniques used by First Nations Australians, such as hand-picking, sieving, winnowing, yandying, filtering, cold-pressing and steam distilling (teaching context)
How to use this unit
Read the topic guide, use the teacher slide for instruction, then complete the Worksheet, Practice and Test. These three activities use the same eight-question unit bank.
Teacher resource
AC9S7U06 teacher slide
Use this one-page PDF to introduce the key idea, vocabulary and teaching sequence before students begin the activities.
Open teacher slide (PDF)Common mistakes to watch for
- Describing what is seen without connecting it to a question, pattern or prediction.
- Using everyday words only and missing simple scientific vocabulary.
- Changing more than one thing in an investigation, which makes the comparison unfair.
International curriculum mapping
This table gives closest-topic mapping for search and planning. The Australian Curriculum code is exact; overseas entries are broad equivalents because each jurisdiction structures outcomes differently.
| Region | Curriculum | Closest mapping |
|---|---|---|
| Australia | Australian Curriculum v9.0 | AC9S7U06 — use a particle model to describe differences between pure substances and mixtures and apply understanding of properties of substances to separate mixtures |
| Victoria | Victorian Curriculum F-10 | Year 7 Science: closest match in Chemical sciences. Use this page as a VIC-aligned practice and worksheet reference. |
| NSW | NSW Curriculum | Stage 4 Science: closest content focus for A particle model to describe differences between pure substances and... and related outcomes. |
| United States | Common Core / NGSS | Grade 7 NGSS science closest topic match for A particle model to describe differences between pure substances and.... |
| England / UK | National Curriculum | Key Stage 3 / Year 7: closest programme-of-study match for A particle model to describe differences between pure substances and.... |
| Canada | Provincial and territory curricula | Grade 7 closest topic match. Canada varies by province, so use this as a broad Ontario/BC-style learning outcome reference. |
| New Zealand | New Zealand Curriculum | Level 4 Science: closest achievement-objective topic for A particle model to describe differences between pure substances and.... |
| India | NCERT / CBSE | Class 7 closest NCERT/CBSE topic match for A particle model to describe differences between pure substances and.... |