temperature. I have decided to alter the temperature of the yeast and time the amount of carbon dioxide that will be given off at different temperatures. I have decided to time how much carbon dioxide is given off in five minutes. Throughout the investigation, I will keep the temperature the same as I have specified for each reading. For example, if I am taking a reading in which the temperature must be 5 degrees, I will make sure that the yeast is kept at this temperature. When I am altering the temperature
Chemistry Investigation An investigation to find the optimum temperature that will produce the maximum amount of oxygen from hydrogen peroxide using the enzyme catalase Introduction Hydrogen peroxide is poisonous to all living things if it builds up in the cells but when it is introduced to the enzyme catalase the react between the two makes water and oxygen as byproducts. There are many factors witch affect the production of oxygen these are listed below. For this experiment the enzyme
utilizing at their facility and risk involved with the product being manufacture could have drastically influenced the outcome of this incident. While both owners had a chemistry / chemical history, reactive chemistry is not commonly part of the curriculum for most chemical degree programs. The owner’s limited knowledge of reactive chemistry was apparent in the lack of redundancy in the cooling process of the reactor. This created a single point of failure to allow for a catastrophic incident. This
factors that influencing practical works in chemistry in secondary schools a case of Wolaita zone, Ethiopia. Key factors among them are teachers’ poor knowledge of practical work, full timetable of chemistry teacher for the theoretical classes, absenteeism of the teacher at practical classes, late commencement of teaching practical class; lack of awareness and motivation from school managements and unsafe working environments, lack of separate chemistry laboratory, lack of equipment in the laboratory
forms. Fullerene chemistry has provided a new dimension of aromatic and a new platform for discussion of mathematical techniques pertinent to large cages. They are basically, large carbon cage molecules. These fullerenes have attracted great interest a large number of physical and chemical properties. These properties of nanostructures strongly depend on this size, shape and chemical compositions. This property leads to very interesting and recent applications in medicinal chemistry, material science
In the history of science, alchemy refers to both an early form of the investigation of nature and an early philosophical and spiritual discipline. Both forms combined elements of chemistry, metallurgy, physics, medicine, astrology, semiotics, mysticism, spiritualism, and art as parts of a greater force (Royal Society of Chemistry).
coiled in the minds of John Dalton in the atomic theory, Rosalind Franklin with genetics, and most importantly Antoine Lavoisier the father of modern chemistry. All who, worked extensively to acquire the understanding that fascinated them most, chemistry. Another chemist who sought after the same knowledge was Stanislao Cannizzaro. Studying organic chemistry Cannizzaro explained how certain elements lacked the hydrogen atom in what is know n as the Cannizzaro Reaction. Being the youngest of ten children
system. Also the mathematical description of the interfacial mass transfer rate of the primary oxidant-diatomic oxygen (O2) molecule) from the gas to the liquid phase has been evaluated. The conclusions are summarized as follows: 9.1.1 Reaction Chemistry of sulphur In the alkaline pressure oxidation of PGM’s system, sulphur reacts with an excess of hydroxide resulting in a solution containing sulphate, sulphite, thiosulphate, polysulphides and free hydroxide ions. The sulphite ion is predominant
at the forefront of synthetic compound synthesis technology. KC Nicolaou is one such leader. The main goal of Nicolaou's lab is the complete synthesis of naturally occurring compounds, along with solid phase chemistry, molecular design, combinatorial synthesis, and biological investigations; some of the results of Nicolaou's work include: the total synthesis of the anticancer agent Toxol, the marine neurotoxins brevetoxins A and B, the anititumor agents epothilones A and B, eleutherobin and sarcodictyins
clients in more than 200 countries and supplies its products to a number of industries. It products include chemicals, plastics, fertilizers, dyes and pigments, inks and printing accessories, oil and gas. The main strategy of BASF is “We Create Chemistry for a sustainable future”. By the end of 2013, BASF employed 112,206 employees and posted sales of €73.97 billion. A responsible citizen continues to bring changes in the society. In the same way, BASF also focus on projects that are related to corporate
the modern atomic theory. Each one of them developed a certain experiment to prove and demonstrate its way of seeing these tiny particles. They tested and proved each other’s theories, in order to create the modern atomic theory. During this investigation, the previous scientists will be researched and explained, with the purpose of understanding how did these theories overlap and improve. l. Democritus Democritus, also known as “The Father of Modern Science”, was an ancient Greek philosopher
he became a director of the Second Chemical Institute of the Berlin University. He worked here from 1891 to 1905. During this time he also proved the law of concentration of mass and energy to be true, adding to his contributions the science of chemistry. He died in 1910. (3) This experiment was ground- breaking for many reasons. First, it displayed a clear end that happens after a an defined amount of time. Works Cited 1.) http://en.wikipedia.org/wiki/Iodine_clock_reaction 2.) http://www.sciencebuddies
Subsequent to attending a week of chemistry and medicine lectures during the Sutton Trust Summer School programme at St Andrews University and attending master classes at local universities, I know that I am committed to continue with my scientific education. The experience of lectures and the practical investigations in the laboratory have given me an indication of how to analyse and interpret data at such an advanced level. Studying pharmacology would allow me to develop my knowledge to a higher
General Chemistry along with a laboratory component. With over 1000 students enrolling General Chemistry every quarter, the demand for extra assistance in the laboratory portion of this course is indisputable. Having an experienced member in the lab working alongside the graduate student teaching assistant may prove to be beneficial to the students by increasing teacher/student ratio and facilitating peer education. It’s possible that utilizing Learning Assistants in the General Chemistry laboratories
Antoine Laurent Lavoisier is considered to be the father of modern-day chemistry (Balchin 36). He had an unbelievable impact on the way the world views chemistry today. From identifying elements to discovering the importance of the role of combustion, he played an essential part in the world’s scientific ideas and inventions. He was so influential that he is said to have an equal if not greater impact in chemistry as Newton did in physics (Tiner 90). He used the initial ideas of Joseph Priestley
Investigating How Different Concentrations Affect the Rate of Reaction In this investigation I am investigating the effect of one factor on the rate at which calcium carbonate reacts with hydrochloric acid. I have decided to change the concentration of the acid to investigate how different concentrations affect the rate of reaction, and to discover what amount, at which concentration releases a higher quantity of gas. There are other factors, which could have been used as the variables.
Investigating the Effect of Changing the Concentration of Sodium Thiosulphate in the Reaction Between Hydrochloric Acid and Sodium Thiosulphate Introduction The reaction equation for this experiment is: Sodium Thiosulphate + Hydrochloric acid = Sodium chloride + Sulphur dioxide + Sulphur + water Plan Input variable: Concentration of Sodium Thiosulphate. 1) 5ml Sodium Thiosulphate 25ml water 2) 10ml Sodium Thiosulphate 20ml water 3) 15ml Sodium Thiosulphate 15ml water
category to the Periodic Table of Elements. The four noble gases he discovered were Argon, Xenon, Neon, and Krypton. Ramsay furthered the discoveries of Helium and Radon, as well. In his later life, he was given many awards, such as the Nobel Prize for Chemistry, the Davy Medal, and was knighted. He was awarded the Nobel Prize in 1904. His later awards were awarded to him shortly after. He was a very smart man who accomplished an assortment of scientific discoveries and achievements in his lifetime. Even
Development of specific ethers has been inactive and fruitful area of investigation in the past few decades.2The strategy of ether catalysis General encompasses synergistic activation of a ethers an electrophile by two or more reactive centers through the combination of a Lewis acid and Lewis base working in concert. Such approach
The Effect of the Amount of Sodium Chloride on the Electric Current During Electrolysis Background When an electric current passes through sodium chloride solution, chemical reactions take place at both cathode and anode. If one passes through sodium chloride solution, there will be passage of ions moving through this solution. This results in positively charged sodium ions, which have been dissolved into the solution, moving towards the cathode and deposited there. At the same time, negatively