Today we learnt about the ozone (O3) layer, its composition and function. As the ozone layer serves as a protective screen towards some of the UV radiation, today’s lesson also involved the different electromagnetic waves and their properties such as wavelength and frequency.
Category: The Impact of Chemistry on Society
I learnt that some of the solutions to reduce ozone depletion, such as the releasing of more ozone will not work. This is because, we are not solving the root cause of the problem. We should instead find ways to reduce the emission if ozone depleting chemicals.
Today’s lesson is about the use of ozone and how its is currently being depleted. In today’s discussion, we discussed about the why it is not feasible for us to create ozone and then ship it up into the stratosphere to curb with the problem of ozone depletion. There are several reasons why this is not feasible. The 1st reason is that this way doesn’t solve the root of the problem. The method is also not feasible because there is […]
Today’s group based learning was simply brilliant. My team nose-dived into the arcane world of chemistry with regards to the ozone. Learning about this quaint, yet vital for life, layer was intriguing and very fulfilling as an academic pursuit. We learned and debated about the proper name to be adopted for the ozone layer- whether ozone screen should be used instead- and weighed the pros and cons of each option. We then examined a cartoon depiction of the ozone problem exacerbated […]
The list below shows what we have learned today in the CM8001 Lecture: Different energy and wavelength of electromagnetic radiation Ozone layer Chlorofluorocarbons (CFCs) and how it damages the ozone layer in stratosphere Chemical bonds, subatomic particles and isotopes Structural formula of a chemical
1a) The connection between coal-fired plants and poor visibility is such that coal fired plants release huge amounts of water vapour along with the combustion process. Hence, water vapour when cooled in the forest area in the National Park becomes visible as fog, causing the poor visibility. b) The average pH of rain should be neutral at pH = 7. Therefore, since the average rainfall in Mammoth Cave National Park is 10 times more acidic than natural, the difference in […]
1. When acetone dissolves the polymer, the gas present in the foaming agent is allowed to evaporate and is removed from the structure. The polymer becomes more compact and denser as the polymer collapses on itself due to the absence of the gas. 2a. Low density polyethylene(LDPE) is made from ethylene and has an increased amount in branched bonds when compared to HDPE. The Branched arrangement of LDPE results in weak intermolecular bonds within LDPE and results in lower tensile […]
Categorized in Final Project, My Work
Introduction Gasoline is a fuel that is distilled from the crude oil. Gasoline consists of organic compounds which exists in the form of various structures and include linear and even cyclic structures such as aromatic or alkane cyclic hydrocarbons. While the composition of gasoline may vary, a common gasoline structure is provided below. In the diagram provided, gasoline is depicted to have 8 carbon atoms and 8 hydrogen atoms.The density of gasoline ranges from 0.71 to 0.77kg/m3. Gasoline plays an […]
1a) chemical formula : C5H9N3 1b) 1c) 2a) C16H21N3 b) The ethylamine moiety of the antihistamine is able to interact with the histamine receptor competitively and block the site of histamine binding. 3) Drugs that produces a psychological response : Aspirin, Morphine, Estrogen, Amphetamine Drugs that inhibit growth of substance that cause infection :(Keflex) antibiotics, Penicillin 4a) The herbal supplement manufacturers should be details of the supplement on the packaging. b) The legislation available in Singapore is the HSA […]