Chemical element

An Isotope is an atom of an element which has a different number of neutrons and different mass number but the same proton number. The isotope that will be focused in the essay is carbon 14 isotope. Carbon is found in all living things and is the building block for organic material, there is carbon 12, 13 and 14 and they all have different properties. This isotope was discovered on February 27, 1940 by Martin Karmen and Sam Ruben and is the most radioactive out of all carbon isotopes. The…

39, ‘Safe Handling of Plutonium’ ( IAEA, 1998). Plutonium is a man-made radioactive element that is made from uranium in nuclear reactors (Environmental Protection Agency, 2014). Much of the plutonium made was to be used for nuclear war. When plutonium decays it releases radiation. So do the other forms of isotopes. The half-live of these…

Chlorine is an element that consists of 17 protons, an average of 18.5 neutrons and 17 electrons. It has an atomic number of 17, and an average nuclear charge of 35.5. There are 2 isotopes of chlorine that are 35Cl and 37Cl. 35Cl has an atomic mass of 35 and a natural abundance of 75%. 37Cl has an atomic mass of 37 and a natural abundance of 25%. The average atomic mass or nuclear charge equates to 35.5. Both of the isotopes have the same atomic number. (BBC Bitesize. Atoms and the periodic…

“All animals are equal, but some animals are more equal than others.” This quote was written by George Orwell in his book Animal Farm, one of Orwell’s most famous novels. Throughout history the subject of a distant dystopia has always been explored in many works of literature. The possibility of humanity falling into a bleak and totalitarian society has always fascinated readers. These stories and themes can come to define an author and their legacy as a writer. There is no greater example of…

An atomic model is a proposed idea of what an arrangement of an atom thought to look like. Many physicists such as Dalton Billiard, J.J. Thomson, Ernest Rutherford, and Neil Bohr proposed these ideas and made models based on their own ideas. Out of these physicists, Ernest Rutherford’s planetary model is the most generally accepted atomic model. Ernest Rutherford is a New Zealand born son to a Scottish wheelwright and an English schoolteacher. He did well in school academically as a child and…

not first discovered by Joseph, instead the famous Swedish chemist, Carl W. Scheele, in 1772. Joseph discovered Oxygen independently in 1774. Joseph published his findings in the same year that he discovered the element. Three years later Scheele published his findings on the element. There is a lot of debating in the world of science on who discovered Oxygen first. Most of the credit is given to Priestley or both him and…

The element name given is Phosphorus, it is symbolized in on the periodic table as a P. Its atomic number is 15 and the atomic mass is 30.974 (which is a rounded number). Group number the element is apart of on the periodic table is 15. Phosphorus’ listed isotopes are P-31 (stable) and 23 others and its electron configuration is [Ne]3s2 3p2. Physical properties of the element are varied depending on which allotrope of the element you are talking about. White Phosphorus has a melting point of…

used in many industries including mining and iron and steel production. Additionally, cyanide treats wastewater. According to Wu, F. et al. (2014), socio economics status would be a factor likely to increase exposure of foodborne toxicity because people with low-income consume only one or two foods. On the other hand, children under 18 years old are at high risk in toxicological effects of cyanide since they are immature and differ from adult (ATSDR, 2006). Cyanide compounds would be lethal…

Gibson 1 Reagan Gibson Tripp Sanders Chemistry 1 May 2016 Introduction A Chemy Called Al is quite an interesting read. It is written by Wendy Isbell. It tells the story of a girl named Julie. The book begins talking about Julie and her electrical issues. It talks about her power being out but the TV still being on. It had to do with X-Ray Machines around the whole country. Well she goes to the land of Mathematics, she is afraid her friends are in danger- so she decides to go find them.…

Task-5 a) • Metals Metal structure is made up of crystals of metals which are made up of positive metal ions and these ions are surrounded by a sea of delocalized electrons. To separate these substances from this crystal lattice a lot of energy is needed. In between the positive and negative ions is present a strong electrostatic force of attraction. That is the reason why metals have strong melting and boiling points. In order to slide one layer of the metal ions over the other layer very less…