Science (3)

Science (3)

1. chromatography

   • identify artificial colours.
   • when put into a soloution the colour is desolved up the paper.

2. gas chromatography

   • the sample has to be vapourised.
     • and then goes through the column.
       • they go through at different speeds and thene they seeperate
   • the amount of time the chemical is in the column is known as the retention time.
   • mass spectrometre will identify the substance.