Class Clips is changing
We will be introducing the new Knowledge and Learning Beta website over the coming months. Clips for use in the classroom are now available on your phone, tablet or PC.

Alternatively, you can still browse or search by keyword or clip number on this site.

CLIP 8739

A practical demonstration of the relative densities of liquids

A practical demonstration of the relative densities of liquids

Did you know?

All Class Clips content is available to watch on mobile, tablet and desktop devices on our new Knowledge & Learning BETA website.

Key Info
  • A practical demonstration of the relative densities of liquids
  • Duration: 02:55
  • Dr Yan Wong demonstrates the relative densities of different liquids using cranberry juice and alcohol. The two liquids are divided by a plastic card which is moved to allow a small opening. After a few minutes the higher density cranberry juice sinks to the bottom and the lower density alcohol moves to the top. The experiment can be replicated using a sugary cordial and water instead of alcohol. Published as part of the Bang Goes the Theory website: Please note this clip is only available in Flash.
  • Subject:



    Chem: Materials - States of Matter

  • Keywords: liquid, density, alcohol, trick, experiment, observation, chemistry, BangGoesTheTheory
Ideas for use in class
  • This clip could be used as an introduction to density. After showing the clip the teacher could repeat the experiment in the classroom or students could be set it for homework, provided they are supervised and warned of risks associated with alcohol. Students could be asked to explain what has occurred in their own words. The step-by-step guide to doing the experiment is available here
Background details
  • Clip language : English
  • Aspect ratio : 16x9

BBC navigation

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.