Friday, October 6, 2017

What’s in a Fire Extinguisher?



This week's activity can be found in the CIEC resource 'Runny Liquids' which can be downloaded from http://www.ciec.org.uk/kitchen_concoctions/
This week we continue to explore CIEC’s popular resource for primary teachers, ‘Kitchen Concoctions’, which has been updated for the new academic year 2017/18. Nine revised, exciting science activities (with teacher guidance) can be downloaded for free at http://www.ciec.org.uk/kitchen_concoctions/

Activity 9: ‘What’s in a fire extinguisher?’ has been significantly revised to begin with a class discussion of extinguishers, buckets and blankets, and their use in putting out fires. Children then enjoy the practical aspect of modelling for themselves how one type of real fire extinguisher works by creating carbon dioxide gas from a solid (bicarbonate of soda) – liquid (vinegar) mixture, to extinguish a candle flame.

This exciting activity links perfectly with the National Curriculum for England statutory requirement for year 5 pupils in science which states that pupils should be taught to: ‘explain that some changes result in the formation of new materials, and that this kind of change is not usually reversible, including changes associated with burning and the action of bicarbonate of soda.’


Proving to be a new favourite with Key Stage Two teachers, the activity requires simple equipment (as shown in the diagram) and minimal set up time to provide an almost instant wow factor! Full safety guidance is also provided in this revised version of the resource.

The activity also includes detailed teacher notes with ‘Questions for Thinking’ to probe children’s understanding of the processes taking place. Teachers have commented on the value of having updated cross curricular links to the English curriculum as well as suggestions for progression to outdoor learning and Forest Schools materials.

Nicky Waller       


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