The subject of this film is the element silver. It is traditionally considered to be the second most precious metal after gold. Silver is a brilliant white precious metal and with a density of 10.4 g/cm³ it is one of the heavy metals. Of all metals, silver is the most reflective and absorbent of light. That is why it is used to make mirrors.The film presents some of the properties of silver and how it reacts with other substances.