Racing Liquids - Art on a Plate

This video from the Royal Society of Chemistry (RSC), aimed at primary teachers, demonstrates an experiment which may be used when learning about liquids.

Milk is poured onto a plate and drops of food colouring dotted onto it. The colours hang in the liquid due to a mixture of surface tension and the properties of milk. A cotton bud dipped in washing up liquid is then dipped in the milk and the colours appear to race away from it. This happens because the detergent breaks the surface tension allowing the colour to move and mix together. The result is a colourful pattern or ‘art on a plate’.

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.

Published by

Actions

Share this resource

Collections

This resource is part of Royal Society of Chemistry

Lists that tag this content

Comments