Reversible vs. Irreversible Changes
Students will differentiate between physical changes that can be reversed (like melting ice) and chemical changes that cannot (like burning wood).
Key Questions
- Differentiate between a reversible and an irreversible change in matter.
- Explain why baking a cake is an irreversible change.
- Predict if a change is reversible or irreversible based on observations.
Ontario Curriculum Expectations
Suggested Methodologies
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5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
unit plannerThematic Unit
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More in Matter and Its Properties
Properties of Solids
Students will identify and describe the observable properties of various solid objects, such as shape, texture, and hardness.
2 methodologies
Properties of Liquids
Students will explore the characteristics of liquids, including their ability to flow and take the shape of their container.
2 methodologies
Properties of Gases
Students will investigate the properties of gases, observing how they fill containers and are often invisible.
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Melting and Freezing
Students will observe and describe the processes of melting and freezing, understanding them as reversible physical changes.
2 methodologies
Evaporation and Condensation
Students will explore evaporation and condensation as parts of the water cycle and as reversible changes of state.
2 methodologies