PRELIMINARY CHEMISTRY ASSESSMENT TASK 1. Identify the sources of pollution which accompany the combustion of organic compounds and explain how these can be avoided. Combustion refers to the burning of a substance in oxygen. It is a process in which a self-sustained chemical reaction occurs at temperatures above those of the surroundings. Combustion of organic compounds can result in detrimental impacts on the environment such as the generation of acids and production of carbon monoxide, particulates and soot.
Alkanes respond with halogen, (for example, chlorine or bromine) when the mixture is presented to ultraviolet light (symbolized as hv or UV) or when warmed to high temperature (200 - 400c)). The capacity of ultraviolet light is to give vitality to the homolytic cleavage of halogen (Cl-Cl or Br-Br). The items are haloalkanes (RX) and hydrogen halides (Hx) .The halogenation of alkanes is a free radical substitution response, in which the system includes start, spread and end steps. The monosubstitution of alkanes alludes to the substitution response where there is one and only hydrogen molecule in alkanes substituted by halogen free radical. General mechanism The chain component is as per the following, utilizing the chlorination of methane as an issue illustration: 1.
“Their influence is known as the greenhouse gases, which are carbon dioxide, chlorofluorocarbons, methane, nitrous oxide, ozone, and water vapor”(“American Meteorological Society 2007”). These gases mixes with the sun ultraviolet rays, disburse into the earth atmosphere with harmful results. Carbon dioxide from the burning of fossil fuels is one way the human activities effects the environment. Carbon dioxide from the exhaust of cars in heavily polluted cities, farming machinery such as tractors, and smokestacks of refinery companies are just some of the ways carbon dioxide gases are release into the atmosphere by human contributors. The nitrous oxide gases affect the aquatic ecosystem food web chains, which leads from the smallest phytoplankton up to the largest mammal, which is man.
2. What gas is produced naturally in the stratosphere and is also a primary component of photochemical smog in polluted air at the surface? a. carbon dioxide b. carbon monoxide c. ozone d. nitrogen dioxide e. hydrocarbons 3. Which of the following is not considered a temperature scale? a. Fahrenheit b. Kelvin c. Calorie d. Celsius 4.
Water is used in photosynthesis by plants, which produce oxygen - this reaction is vital for the earth as the oxygen produced is used by humans to breath Water is used in coal powered electricity stations. The coal is burned which boils the water. The water becomes steam, which turns the turbine, activating the generator, then producing the electricity. Because water can also exist as a vapor it can be stored into the atmosphere and be delivered as rain across the planet. Water makes up 90% of the earth’s atmosphere and the other 20% is land Our bodies are about 60 percent water [source: Mayo Clinic].
3. The chromosphere glows red because hydrogen gives off a reddish colour at these high temperatures. The corona 1. The corona is the extremely hot outermost layer above the chromosphere. 2.
The danger of global warming has become the most complicated issue among scientific communities and world leaders. The well-known fact is that the cause of the global warming is emission of greenhouse gases into the atmosphere which is caused by human activities. To reduce the emission of the greenhouse gasses the Kyoto Protocol has been made. The Kyoto Protocol is a protocol to the United Nations Framework Convention on Climate Change. Under this treaty the member countries commit themselves to reduce emission of the most dangerous anthropogenic greenhouse gasses into the atmosphere, namely: carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), sulphur hexafluoride (SF6), and two groups of gases, hydro-fluorocarbons (HFCs) and per-fluorocarbons (PFCs)[2].
2013).Pharmaceutical companies sometimes place active chemicals and waste into groundwater sources, in which almost all of the groundwater may be untreated which most likely cause contamination. (Herber, 2002). Abstract: Increase in the emissions of carbon dioxide by burning fossil fuels is the largest cause of environmental down grading resulting not only in global warming but also causing acid rain which alters the pH balance of ground water. Water is a universal solvent; however, its dissolving properties are very sensitive to changes in temperature and pH. Global economic growth has, unfortunately,
Sulfuric Acid is a strong acid that exists as a colorless oily corrosive liquid and is made by reacting sulfur trioxide with water. This is most commonly found in batteries, manufacture of fertilizers, explosives, detergents, dyes and other different chemicals. Sulfuric Acid is very dangerous to humans as it can cause respiratory tracts of humans and other animals while doing some major damage to plants that helps provide oxygen for us. Ground-level ozone is a secondary air pollutant formed when sunlight triggers reactions between nitrogen oxides and volatile hydrocarbons. If a human inhales ground-level ozone it can cause chest pain, throat irritation, and congestion.
Fossil fuels like the substance sulfur dioxide products are burnt to heat water under pressure , making them steam. This high pressure steam is used to spin the turbine generators which make electricity although this method is not really used anymore now. 5.) What are the potential hazards for using this resource? The potential hazards for using sulfur dioxide is it can affect our environment, plants, animals, the air that we breathe, our water resources and our planet.