Fire Extinguisher

This video from the Royal Society of Chemistry (RSC), aimed at primary teachers, demonstrates an experiment which may be used when learning about the gases, changing state and irreversible reactions.

Night lights are placed in a glass bowl and lit whilst bicarbonate of soda is placed in a jug and vinegar added slowly. Carbon dioxide gas is produced as the vinegar reacts with the bicarbonate of soda. As carbon dioxide is heavier than the air, it stays in the jug and may be poured into the bowl of night lights. The carbon dioxide displaces the air in the bowl and the night lights are extinguished as they no longer have any oxygen to keep them alight.

This demonstration could be used to show the properties of gases with children providing explanations for what they have observed.

Show health and safety information

Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.

0 Files

Published by


Share this resource


This resource is part of Royal Society of Chemistry

Lists that tag this content