More irreversible changes
Lesson details
Learning outcome
I can describe the action of acid with bicarbonate of soda as an irreversible change, where a new material is formed.
Key learning points
- Vinegar is an example of an acid that we find in our homes.
- Bicarbonate of soda is a white powder used in baking to make bread, batter and cakes rise when baked.
- When vinegar and bicarbonate of soda are mixed, this produces a new material in the form of carbon dioxide gas.
- The action of acid with bicarbonate of soda is an irreversible change.
- During an irreversible change, the material that has been changed cannot return to its original state.
Keywords
Bicarbonate of soda - Bicarbonate of soda is a white powder, used in baking.
Acids - Foods that contain acids have a sour taste.
Observe - To observe is to look very closely and use other senses too.
Carbon dioxide - Carbon dioxide is a type of gas that is in the air around us.
Irreversible change - If a change is irreversible, it cannot be undone or changed back to its original state.
Common misconception
All bubbles produced contain air and that it is a reversible change.
Teaching slides explain that the bubbles produced when acids react with bicarbonate of soda contain carbon dioxide and that this change is irreversible as a new material is produced.
Teacher tip
Encourage children to make links between the science and their own lives by discussing the formation of bubbles when fizzy drinks are opened.
Equipment
Vinegar, bicarbonate of soda, teaspoons, beakers, trays or bowls, disposable gloves and glasses.
Content guidance
Risk assessment required - equipment
Supervision
Adult supervision required
Licence
Lesson video
Loading...
Prior knowledge starter quiz
6 Questions
Q1.A change is where a material that has changed can return to its original state.
Q2.What type of change is it when sugar dissolves in water?
Q3.Which of these metals rust?
Q4.Match the type of change to the example.
steel rusting
water freezing
Q5.Which gas is needed for rust to form?
Q6.Which greenhouse gas is produced by burning fossil fuels?
Assessment exit quiz
6 Questions
Q1.Vinegar is an example of a mild .
Q2.Which of these are acids?
Q3.During an irreversible change, the material that has been changed …
Q4.What is produced when bicarbonate of soda is mixed with acid?
Q5.Why is bicarbonate of soda mixed with acids in recipes?
Q6.Match the type of change to the example.
salt dissolving in water
acid reacting with bicarbonate of soda
To help you plan your 5 science lesson on: More irreversible changes, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 5 science lesson on: More irreversible changes, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 2 science lessons from the Properties, changes and separating materials unit, dive into the full primary science curriculum, or learn more about lesson planning.