Reversible & Irreversible Changes
Rationale
Through a deeper understanding of chemistry, we are better able to understand why certain materials have particular properties and how these materials are used.
Investigation Into
- Reversible changes and how they are used in the world around us.
- Irreversible changes and how they are used in the world around us.
- Phase changes between three states of matter.
- Using chemistry to solve problems.
Essential Questions
- What is the difference between a reversible change and an irreversible change?
- What are some examples of reversible changes and how do we apply these processes to reuse waste materials?
- What are some examples of irreversible changes and how do we apply these processes to create new materials?
- How can we conduct a fair test?
Future Action
Your students will develop a curiosity about the building blocks of nature. They will be able to describe and name chemical processes that they observe such as melting, freezing, evaporating, burning, and rusting. Your students will appreciate the ways that scientists and engineers have used their understanding of chemistry to develop solutions to solve problems.
Pretesting and Familiarisation
Chemistry Pretest
Your students will complete a pretest about reversible and irreversible changes.
Your students will complete a pretest about reversible and irreversible changes.
Chemistry Glossary
Your students are going to become familiar with words that they will use during this learning sequence.
Your students are going to become familiar with words that they will use during this learning sequence.
Learning Opportunities
Reversible And Irreversible Change: Matching And Guessing Games
Your students will learn about reversible and irreversible changes as they play a guessing game and a matching game.
Your students will learn about reversible and irreversible changes as they play a guessing game and a matching game.
Reversible Changes: Researching Recycling
Your students will learn about the reversible changes involved in recycling waste.
Your students will learn about the reversible changes involved in recycling waste.
Reversible Changes: Water Filter Experiment
Your students will observe reversible changes as they conduct a water filter experiment.
Your students will observe reversible changes as they conduct a water filter experiment.
Irreversible Changes: Cooking Pancakes
Your students are going to observe an irreversible change when pancakes are cooked.
Your students are going to observe an irreversible change when pancakes are cooked.
Irreversible Changes: Making A Plaster Stick
Your students will observe an irreversible change as they create a plaster stick.
Your students will observe an irreversible change as they create a plaster stick.
Solubility Experiment
Your students will investigate if common materials are soluble or insoluble.
Your students will investigate if common materials are soluble or insoluble.
Demonstration of Understanding
Developing My Presentation
Your students will select a performance of understanding and develop a presentation to show what they have learnt during this learning sequence
Your students will select a performance of understanding and develop a presentation to show what they have learnt during this learning sequence