Silver is used in film media because it tarnishes better than other materials.
Tarnish is the process of oxidation, where a metal turns from some some shiny color to a darker non-shiny color.
Three Examples of Tarnish:
Silver provides the best tonal range, from light to dark. It can capture light from pure white to pure black (or very close).
Additionally, silver tarnishes very consistently. This provides a smooth transition from light to dark on film.
Yes - silver does react and that is why there are quite a few compounds of silver. It is used in photography for example.
it is silver
Silver nitrate.
Yes
It is widely used in standard film-based (pre-digital) Photography.
Silver halides absorb light to form elemental silver. This is the basis for the photographic film. This is an unusual reaction and is certainly not common to all ionic compounds. Silver halides are also unusually insoluble, again not a common property of ionic compounds. In fact silver halides have quite a lot of covalent character! I am sure teacher has something in mind but its certainly not in mine.
It is widely used in standard film-based (pre-digital) photography.
1840
Iodine ******** And silver.
it is used in the compound silver iodide and it reflects the light. it is essentially the basis of black and white photography.
Silver Halide Silver iodide
Silver Iodine