Try this investigation to explore liquids and gases, and practise taking accurate measurements
This resource is also available in Welsh and Irish
This experiment focuses on carbon dioxide gas fizzing through liquids. First watch the video of the ‘lava lamp’ demonstration, then find out how you can investigate the mass of carbon dioxide in fizzy drinks with your learners.
- To show understanding of solids, liquids and gases.
- To understand that gases have mass.
- To take accurate measurements.
- To apply maths skills in science.
Watch the video
The video below shows how to carry out the ‘lava lamp’ demonstration.
Download the supporting materials
Set up and run the investigation with your class using the teacher notes and classroom slides, featuring a full equipment list, method, key words and definitions, questions for learners, FAQs and more.
What do learners need to know first?
Learners should already know that there are three states of matter: solids, liquids and gases. They should have a basic understanding of the properties of each state of matter.
Each group of learners should have:
- A set of electronic scales
- A 500 ml bottle of fizzy drink
- Measuring jug (with a capacity of at least 500 ml)
- Spoons, straws or something else to stir the drinks with
- Investigate the properties of liquids and gases further in our leaky bottle investigation, or explore the amount if sugar in fizzy drinks with our heavy sugar investigation.
- Try our particle disco demonstration from our collection of video demonstrations exploring liquids.
- Read up on solids, liquids and gases in this That’s Chemistry! textbook chapter.
- Introduce your learners to solids, liquids and gases with our primary science podcast.
Primary science investigations were developed in collaboration with the Primary Science Teaching Trust
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Liquids, gases and the ‘lava lamp’