INTRODUCTION Mercury, also known as quicksilver, is a heavy transition metal with chemical symbol Hg. This symbol is derived from the Latin word “hydrargyrum”, which translates to “liquid silver”. It is a silvery-white liquid, and is also the only metal to exist in the liquid state, under standard conditions of room temperature and pressure. The table below summarises some of the main properties of mercury. Chemical Symbol Hg CAS Number 7439-97-6 Atomic Number 80 Relative Atomic Mass 200.59 Density 13.6 g.cm-3 at 20°C Melting point -38.87°C Boiling point 356.73°C Electronic shell [ Xe ] 4f14 5d10 6s2 Lattice Structure Rhombohedral Electronegativity 2.0 on the Pauling scale CHEMISTRY OF MERCURY Relatively to other metals, …show more content…
This filling was quite popular, due to its cheap, strong and durable characteristics. But because of its toxicity, the use of mercury amalgams in dentistry has considerably decreased. • Mercury was used in vaccines preservatives, in the form ethyl mercury, as well as in antiseptic creams, in the form of mercurochrome. Traditional Chinese medicine also contained mercury. Likewise, due to the rising awareness of the ill-effects of mercury, its use in the medical field has been minimized. • Mercury has also been used in skin lightening creams in the past. Laboratory purposes • Mercury is a visible liquid, which responses readily to temperature changes. Hence mercury was used in medical thermometers. But in the clinical field, this metal is gradually being replaced by alcohol or the alloy galinstan due to its adverse effects on human health. It is also used in barometers and manometers since it has a high …show more content…
The amplitude of exposure to the metals, dosage, or compounds of the metals, can determine the severity of the poisoning. Some heavy metals are specially known for having poisonous characteristics, some of the most toxic metals being lead, cadmium and mercury. Mercury poisoning is also known as hydrargyria. All forms of mercury are known to trigger harmful consequences as soon as a particular limit of exposure is exceeded. Toxicity of mercury Mechanism of mercury poisoning Effects of mercury poisoning Factors that determine whether health effects occur and their severity include: • the type of mercury concerned; • the dose; • the age or developmental stage of the person exposed (the foetus is most susceptible); • the duration of
• Liquid- is able to move past each other. • Gas- move quickly and are able to spread apart from one another. 5. Bulb thermometers contain mercury and/or alcohol. Mercury and alcohol grow when the temperature is heated and shrink when it cools.
Most damages when exposed to teratogens occur during the embryonic period. Lead exposure during the embryonic period can cause stillbirths, increased risk for malformations, and VACTERL syndrome; VACTERL association is a disorder that affects
It is also used in the technology industry as it is a very good conductor of heat- which devices like mobile phones require to function properly .Also, it is used in dentistry to make gold fillings which are a replica of human teeth. In conclusion, gold has been improvised to suit many of its applications in the society. To make gold more durable, companies also regularly concentrate it with metals such as copper and silver- which form strong alloys of itself ( BBC, Bitesize GCSE, Science, Metals and
Copper is a chemical element with the symbol Cu and atomic number twenty-nine. It is also a solid at room temperature. Copper was most likely the first element ever manipulated by humans. In fact, humans discovered copper during the Paleolithic era. Copper was also very important during the copper and bronze age.
Drinking contaminated water can cause different types of cancers and also infertility and birth defects due to of the presence hazardous chemicals. Impoundments that have not been built or properly closed off have led to the death of many animals and also health issues in
George i Whitlatch describes the value of manganese classified into chemical and metallurgical
It is also in all atomic nuclei except those of ordinary hydrogen.
Moving one step forward, the remaining choices are Manganese, Aluminum, Lead, Zinc, Tin, Nickel, Cadmium, and Chromium. At this point, the density can be used to classify since a few of the choices have been removed. Approximately at 25 degrees Celsius, Manganese has a density of 7.44, Aluminum with 2.70, Lead is at 11.35, 7.13 for Zinc, 7.31 for Tin, 8.91 for Nickel, 8.65 for Cadmium, and 7.19 for Chromium, where all of the densities have a unit of g/cm3. Based on information from the experiment sheet, it is affirmed that the calculated density of the unknown metal should be accurate to about 0.1%, although eliminating options based on this would not be reasonable, as lab data is not necessarily consistent every time. On top of density, logic and reasoning can also be used.
Ric O’Barry conveys Mercury is the second most poisinist chemical in the entire world. The poison attacks, brain cells and the nervous systems, causing much damage to the body, possibly leading to dementia, lifelong brain damage, or death. Nevertheless the producers clearly share that dolphin meat is highly toxic and filled with mercury; the mercury could have jarring effects on many people's health including young children. During the documentary Ric O’Barry proves the small city of Taiji served mercury filled dolphin meat in their school lunches for children. Additionally Ric O’Barry video tapes and displays pictures of effects mercury can have.
Mercury is a harmful toxin that can cause serious health problems to the human nervous system. The reason why dolphin meat has such a high level of mercury is because dolphins eat other fish and the more fish they eat, the more mercury they have in their systems. The dumb Japanese hunters
The refining process, only possible through mercury amalgamation, was harmful to anyone who came
Heavy metal gushed from Gold King into the river leaving the entire river a solid mustard color. It is very heartbreaking to see such a beautiful landmark get completely violated and destroyed. Lead is just one of the many heavy metals released, and it's not the deadliest. The wastewater also contained extremely high levels of arsenic, cadmium, beryllium and mercury. It also contained zinc, iron and copper.
Impacts of coal pollution on human health: Different type of harmful gas are releases during coal combustion: • Sulfur dioxide (SO2) which responsible for acid rain and respiratory illnesses • Nitrogen oxides (NOx) which contribute to smog and respiratory illnesses • Particulates which contribute to smog, haze, and respiratory illnesses and lung disease • Carbon dioxide (CO2) which is the primary greenhouse gas produced from the burning of fossil fuels (coal, oil, and natural gas) • Mercury and other heavy metals, which have been linked to both neurological and developmental damage in humans and other animals Coal pollution also contribute to global warming and the health implications .Coal pollutants affect all major body organ systems
Chapter five titled “Mercury” of The Poisoner’s Handbook by Deborah Blum gives a fascinating story, about a woman named Gertie Gorman who was married to a man named Charles Webb. Many believed that her husband poisoned her because in her will “[she would leave] everything to her husband” (112) giving him a good motive for that action, but as the investigators opened up the body they found the presence of mercury bichloride, which was a “messy killer” (114) meaning it was hard to miss because of all the bloody inflammations. As the investigators looked more into the case they found out that Webb was not the person responsible for his wife’s death, however Webb was still prosecuted. Mercury can be poisonous if taken in extreme quantities causing the same things it did to Gertie’s body.
Mercury was a common ingredient that they used yet upon ingesting it, one would succumb to fever, bloody vomiting, burning pains, muscle tremors, and distorted senses, all of which were not what one