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They turn black
What else can I help you with?
What happens when silver chloride is exposed to air?
Silver chloride is decomposed under the action of UV radiation and air.
What happens when silver exposed to air?
Tarnish.
Why did they use chemicals and glass plates in early photography?
until celluloid was invented Glass plates were used because it was the only way to suspend the emulsion evenly and allowed light to pass through. It was easier to handle. Some glass plates were large and were put into contact with paper to create a positive image. Chemistry was used to convert the silver halides in the emulsion to visible black metallic silver halides. When light was shone through the glass the black metallic silver halides stopped the light and the paper was exposed where the light pass by the halides. This caused the material being exposed to show a positive image.
Is silver halides a metal or alloy?
Siver Halides are neither a metal or an alloy. They are a salt.
What Metal or Alloy that turns black when exposed to light and is used as film Coating?
Iridium is a metal that turns black when exposed to light and is used as a film coating for various applications, including optics and electronics.
What happens to sliver when exposed to oxygen?
When silver is exposed to oxygen, it can undergo a chemical reaction and form a layer of silver oxide on its surface. This can cause the silver to tarnish, leading to a darkening or discoloration of the metal. Regular polishing can help remove this oxidation layer and restore the shine of the silver.
What property of ionic compounds explains why silver halides can be used in 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.
When a photographic film is exposed to light then salt on the film breaks down what meatel is formed?
The short answer is silver. In black and white film and print technology, the silver halides created by exposing the film to light in the camera or on paper under an enlarger, are reduced to silver by the developer and then the remaining halides are washed from the film during the fixing process. In some color photography, ALL of the silver is washed from the film and replaced by dyes introduced during the processing.
Which silver halide is most soluble?
Solubility of the silver halides decreases down the group.The solubilities of silver halides decreases down the periodic table:AgF :Ksp=205AgCl:Ksp=1.8×10−10AgBr:Ksp=5.2×10−13AgI :Ksp=8.3×10−17
What is the developing chemical in a pin hole camera photo?
Silver salts. Mainly silver halides.
What will react with alcoholic silver nitrate?
Alcoholic silver nitrate reacts with alkyl halides to form silver halide and alkyl nitrate compounds. This reaction is commonly used in organic chemistry to identify the presence of alkyl halides in a sample.
What do the chemicals on photography film react with?
You will have to be more specific: black and white? color negative? color slide? Polaroid instant film? Do you mean how do the developing chemicals act on film? Broadly speaking, "chemicals" has more to do with development whereas compounds would apply to film. Films are coated in silver halides. When the film is exposed it has what is called " a latent image'. It stays like that until it is developed. Once the film is developed the silver halides turn into black metalic silver halides. At this point we have both on the film and we have to removed the unexposed and undeveloped silver halides. This is done by fixing the film using in and acid mixture that removes the unexposed halides and stops any further developing of the film. The film is then washed until the chemicals are removed. It is then dried. With colour films there are three layer of emulsion. Each layer is sensitive to a particular colour. The process is basically the same as above except that after the silver halides have been processed the colour chemicals are released on each layer by the chemical process.
