Change Of State key idea
Material
The substance or sample being studied.Property
Ice melting and water freezing are opposite changes. Water vapour condensing on a cold glass shows gas changing to liquid.Evidence
The visible observation, label, or test result.Conclusion
The chemistry idea shown by the evidence.Labelled diagram
Change Of State explain card
A substance changes state when particles gain or lose heat energy. The substance may remain the same even though its state changes.Exam cue: Use a labelled observation before the explanation.
- 1Material -> Property: has
- 2Evidence -> Conclusion: supports