Bromine

Texas, commonly known as “The Lone Star State”, its official nickname, is the 2nd largest state with a population of about 28.2 million people on 268,597 square miles. Beyonce, Matthew McConaughey, and Janis Joplin (a singer from the 80s) were all Texans. If you like sports, you would be happy to know all of the Dude Perfect Crew were born in the Lone Star State. The Texas economy is the 2nd largest with a gross state product of $1.648 trillion. The beautiful Rio Grande is shared by Texas and…

Climate change endangers all sectors of our society. Human health will be impacted directly and indirectly due to the environmental changes that will occur with climate change. Ozone depletion occurs when manufactured chemicals such as chlorofluorocarbons reach the stratosphere; the UV radiation from the sun causes the release of chlorine atoms that react with the ozone. This chemical cycle causes ozone destruction that depletes the ozone layer. Ultimately, the chain reaction will affect the…

Abstract This experiment involved an electrophilic aromatic substitution of bromobenzene. Two products were formed: 4-nitrobromobenzene (4-NBB) and 2-nitrobromobenzene (2-NBB). Utilizing column chromatography and recrystallization, separation and purification of the two products was obtained. The mass of 4-NBB, the para product, was 1.57 grams, while the mass of 2-NBB, the ortho product, was 0.80 grams. The para product was expected to have the higher yield, since it is more stable and…

• The heat (q) “lost” or “gained” is related to a) sample mass b) change in T and c) specific heat capacity Specific heat capacity = heat lost or gained by substance (J) (mass, g)(T change, K) © 2006 Brooks/Cole - Thomson 11 Change in Temperature (T) ∆T of System Increase Sign of ∆Tsystem + Tfinal >Tinitial Tfinal < Tinitial Sign of q + Direction of Heat Transfer Heat transferred from surroundings to system (_____thermic) Heat transferred from system to surroundings (_____thermic)…

Experiment 1: Alkanes & alkenes: Combustion and action of sulphuric acid. Objective: To make careful observations and compare the difference(s) between alkanes and alkenes. Introduction: Hydrocarbons are composed exclusively of oxygen and hydrogen. There are three types of homogeneous hydrocarbons (whose members differ by one CH2 unit): alkanes, alkenes and alkynes. The difference between these three groups is in the bond types between the carbons. Alkanes form only single bonds, alkenes…

Rationale I decided to turn this lesson into a flipped lesson as the topic on ionic bonding is something very microscopic and I feel it would help students to develop a more concrete understanding of an abstract topic. By recording the lecture which includes a step-by-step guide on drawing a dot-and-cross diagram, the weaker ones will be able to study at their pace and choose to pause or rewind should they not understand. This helps them to understand the concepts better, as opposed to going…

Is there any chance global warming, dramatic effects are changing the earth’s atmosphere slowly or rapidly? The industrial revolution begun in the mid- 17th century, it was a transition from agriculture era to manufacturing production era. This was the time where technology was improving and aspect of our daily life was changing. The first powered gasoline car (Benz Patent-Motorwagen) was made in 1807 and made by Karl Benz. Gasoline is made from fossil fuels, which is released into the…

Cancer, skin disease, plants and wildlife all around us dying, the ozone hole is dangerous and the threat is real. The hole in the ozone layer has the potential to cause mass damage to the Earth. The Antarctic region is devastated due to the exposure to ultraviolet light and the climate across the world has begun to shift. Due to the harmful impact humans have has on the environment, this even could cause a major catastrophe for the earth and its inhabitants. The ozone is a layer of gas in the…

Contrary to the title, the discovery of astatine was anything but a momentary process. Many scientists discovered different astatine isotopes, atoms with the same number of protons but differing numbers of neutrons, but were unable to either reproduce their results or keep the isotope in existence for any useful amount of time. After decades of possible discovery and rediscovery, astatine was officially included in the periodic table of elements with the abbreviation At and an atomic number of…

It is vital to reduce contaminates and decrease the risk of microbes in drinking water. This process is accomplished through water disinfection. This procedure can be done though several methods; however, chlorine and chloramine are the most frequently used forms of chemical disinfection (Serrano, Silva, & Gallego, 2011). When this process is utilized, there is an increased risk in the release of unwanted by-products can cause severe health risk. The use of chemical disinfection methods,…