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 93

Production of dyes from chemical reactions

Production of dyes from chemical reactions
Play

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
  • Production of dyes from chemical reactions
  • Duration: 03:09
  • Chemical reactions are used to produce different colours of dye to change the colour of a white football kit. Although we can now choose from a wide range of colours this hasn't always been the case and one type of yellow dye was once produced from cows' urine. An expert on dyes explains how chemists have discovered ways of making almost any colour from chemical reactions and we see the presenter make an orange dye from two colourless chemicals. This clip has subtitles available in Flash.
  • Subject:

    Science

       Topic:

    Chem: Chemical Reactions

  • Keywords: chemical reaction, colour, dye, sodium chloride, subtitled
Ideas for use in class
  • Use this clip to introduce useful and non-useful chemical reactions before brainstorming or researching other kinds of useful reactions.
Background details
  • Clip language : English
  • Aspect ratio : 4x3

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.