Science Matter & Materialsusually ages 9–10

Reversible Changes

Demonstrate that dissolving, mixing, and changes of state are reversible changes where no new materials are formed

How to tell they’ve got it

Tick these off as you see them — no test required.

Define a reversible change as one where the original materials can be recovered
Give at least three examples of reversible changes: melting, freezing, dissolving, evaporating
Explain how to reverse each example (e.g. freeze melted chocolate, evaporate a solution)

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Can your child explain that melting chocolate or dissolving sugar can be undone — you can get the original material back — because these are reversible changes?

Where this sits on the map

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Builds on

Heating & Cooling Changesages 7–9Must understand state changes before categorising them as reversible

Dissolving & Solutionsages 9–10Must understand dissolving before demonstrating it is reversible

Changes & Separation Vocabularyages 7–9Describing dissolving and changes of state as reversible requires the vocabulary from the process terms node

Reversible Changesthis skill · ages 9–10

Unlocks

Irreversible Changesages 9–11Must understand reversible changes before contrasting with irreversible ones

Conservation of Massages 10–11Must understand reversible changes before investigating conservation of mass during changes

Physical vs Chemical Changesages 11–13KS3 physical vs chemical changes extends KS2 reversible vs irreversible changes

solid = must come firstdashed = helps

Curriculum alignment

Candidate matches to official curriculum codes — machine-suggested, unreviewed (v0.1).

Show candidate curriculum codes · 2 ACARA · 3 VIC

Australian Curriculum v9 candidate

AC9S6U04high confidenceYear 6 · Science understanding

compare reversible changes, including dissolving and changes of state, and irreversible changes, including cooking and rusting that produce new substances

AC9S3U04medium confidenceYear 3 · Science understanding

investigate the observable properties of solids and liquids and how adding or removing heat energy leads to a change of state

Victorian Curriculum 2.0 codes & levels only

VC2S6U04high confidenceScience · Levels 5 and 6 · Science Understanding strand

VC2S4U04low confidenceScience · Levels 3 and 4 · Science Understanding strand

VC2S6U03low confidenceScience · Levels 5 and 6 · Science Understanding strand

These are candidate alignments generated by semantic matching — machine-suggested and unreviewed (v0.1), not official or verified mappings. For official curriculum content see australiancurriculum.edu.au, curriculum.nsw.edu.au and f10.vcaa.vic.edu.au. Don’t rely on them for registration or compliance purposes.

Nearby on the map

Advanced Material Propertiesages 9–11 Dissolving & Solutionsages 9–10 Irreversible Changesages 9–11 Material Properties Vocabularyages 9–11

All Matter & Materials skills →