[DOC] [TLE] Silver to Black - and Back - Journal of Chemical Education (ACS ... [PAR] Mar 1, 2000 ... Air Pollution and Industrial Hygiene  Apparatus and Plant Equipment ... Contact 
with materials that contain sulfur compounds, such as hardboiled eggs, 
mayonnaise, mustard, and rubber bands can cause tarnish. In air, a silver object 
can tarnish owing to the reaction of silver with hydrogen sulfide (H2S). [DOC] [TLE] What causes silver to tarnish? | Reference.com [PAR] Silver tarnishes due to a reaction with sulfur in the air.
 Moisture and sunlight can also cause tarnish.
 ... Owners can simply reverse the chemical reaction that caused the tarnish using baking soda and an aluminum pan. [DOC] [TLE] The Straight Dope: Unshiny day: Is there more sulfur in the air than ... [PAR] Jan 25, 2008 ... Is this making silver tarnish faster than before? ... Is it true that the vast majority of 
silver tarnish is the result of hydrogen sulfide air pollution from power ... I can't say 
I completely understand the fascination here, but who am I to argue? ... that much 
of the compounds that actually cause silver to tarnish, namely... [DOC] [TLE] Meet The Experts - Causes of tarnishing - Assay Office [PAR] Silver naturally interacts with oxygen and sulphur-bearing pollutants to create ... 
High sulphur and other tarnish-causing compounds released from paper, ... The 
tarnishing of silver, copper and certain copperzinc alloys can be avoided ... 
polyethylene coated with 'liquid saran' to keep the air from escaping from the 
bubbles. [DOC] [TLE] Sulfur dioxide - Wikipedia [PAR] Sulfur dioxide (also sulphur dioxide) is the chemical compound with the formula 
SO 2. At standard atmosphere, it is a toxic gas with a pungent, irritating smell. .... 
Sulfur dioxide can react with certain 1,3-dienes in a cheletropic reaction to .... 
Sulfur dioxide is a major air pollutant and has significant impacts upon human 
health. [DOC] [TLE] Major Air Pollutants - Infoplease [PAR] Air pollution is a real public health and environmental problem that can lead ... 
created directly, but is formed when nitrogen oxides and volatile organic 
compounds mix in sunlight. ... Ozone near the ground can cause a number of 
health problems. ... Sulfur dioxide mostly comes from the burning of coal or oil in 
power plants. [DOC] [TLE] ISTAS: Chemicals harmful to the atmosphere [PAR] An air pollutant is a substance in the air that can cause harm to humans and the 
... sulphur dioxide, carbon monoxides and Volatile Organic Compounds (VOCs). [DOC] [TLE] Jewelry Tarnish, Why it happens [PAR] Make-up present on the skin or clothing is the most common cause of the 
blackening or smudging. ... The chemical compounds of silver and copper which 
are formed turn very dark ... The tarnish is always due to the contact with sulphur 
compounds. ... such as eggs and onions; in some fish or shellfish; and in polluted 
air. [DOC] [TLE] silver and sulfur: case studies, physics, and possible ... - DfR Solutions [PAR] react directly with silver ions that have oxidized or can they can absorb to the 
surface, ... atmosphere are divided into four classes, from least corrosive (Class I) 
to ... pollutant gases. .... As seen in Figure 12, the sulfur-based compounds seem 
to attack the ... sulfide corrosion products as the root-cause of field issues. 
However... [DOC] [TLE] air pollution facts, information, pictures | Encyclopedia.com articles ... [PAR] Get information, facts, and pictures about air pollution at Encyclopedia.com. ... For 
example, sulfur dioxide is produced by fossil fuel combustion and particulate .... 
in 1987; its purpose is the reduction of chlorofluorocarbons (CFC), a class of 
compounds .... However, at ground level, O3 is a lung and eye irritant and can 
cause... [DOC] [TLE] Sulfur Part I: Sulfur and Sulfur Compounds in the ... - Toxipedia [PAR] Sulfur and sulfur compounds are found occurring in rocks, soil, ground water, 
ocean ... (pollution) of industry and other human activities (i.e. vehicle exhaust). ... 
toxic compounds greatly affects the limbic system, thereby causing a variety of

Question: Sulfur compounds in polluted air cause silver to do this
Answer: tarnish