This video demonstrates the heating of hydrated (blue) copper sulphate which forms anhydrous copper sulphate (white). This change is then reversed by the addition of water.

Right click here and open a new window to view a word document with the chemical theory, photographs captured from the video and questions which might be used during a student practical or demonstration.

Left click to see high resolution video, right click to download (4.6MB)

For more information: Classic Chemistry Experiments, Kevin Hutchings, Royal Society of Chemistry, UK, ISBN 085404 9193