Period 5 element

Linus Pauling Linus Pauling was born on February 28,1901 in Portland, Oregon. He started his early education in Oregon. When he graduated from the Oregon Agricultural college in Corvallis (Now is called Oregon State University) in 1922, he had a bachelor's degree in chemical engineering. For his postgraduate study Linus went to the California Institute of Technology(A.K.A. Caltech). There, he got his Ph.D in chemistry and mathematical physics in 1925. Once he joined the Caltech faculty in 1927,…

room with only a table, chair, and Jim. In theater there are six key elements. The first key element is the audience. In “Future Thinking” I feel the audience was very much…

Chemistry has many different career paths and chemists specialise in a diverse range of different areas. Chemistry is a science that deals with the properties, composition, structure of elements and compounds, thereby; chemists use this information to develop new materials and substances. There are a number of career paths in chemistry such as biochemistry, industrial chemistry, electrochemistry, polymer chemistry and much more. While all the other field names speak for themselves, industrial…

2. Observe the different colors of the chemicals and record the colors that are similar. 3. Place a pH strip in each well and let it sit for 30 seconds. 4. Match the color to the corresponding color of the strip to the pH chart on the container. 5. Record the results of the pH of both the known and unknown chemicals in a table. 6. Match the pH of the unknown chemicals to the known chemicals. More than 2 chemicals with the same pH are to be set aside. 7. Rinse wells with soap and water. 8.…

Chlorine The element chlorine is located in the 7th group in the periodic table it is the symbol for CI. Chlorine is a chemical element it has a atomic mass of 35. Chlorine has 17 protons, 18 neutrons, and 17 electrons. The electron configuration for chlorine is 3s2-3p5. Chlorine has a boiling point of 3.16, and is family with halogen. Chlorine was discovered in 1774 by Carl Wilhelm Scheele. He obtained it through the reaction of the mineral pyrolusite manganese dioxide with hydrochloric acid.…

4.2.1. Material: Lead zirconate titanate (PZT) PZT is a short for lead zirconate titanate inorganic compound that has a chemical formula of Pb [ZrxTi1-x] O3 (0 ≤ x ≤ 1). PZT is made and composed of the two chemical elements lead and zirconium combined with the chemical compound titanate while formed under extremely high temperatures. The dielectric constant of PZT can range from 300 to 3850, depending upon orientation and doping. PZT possesses piezoelectric effect meaning that it changes shape…

ocean as a combination of chemicals created amino acids, and from there life evolved. A Russian chemist named A.I. oprin and an English geneticist named J.B.S. Haldane came up with this theory in 1920. to test this theory they collected and mixed elements thought to be on earth at the time and sparked the mixture with electricity, The experiment resulted in the creation of amino acids. The reasoning was that life formed because of a mixture of chemicals and the atmosphere. Iron sulfur World:…

2_Pros and Cons of Vaping (900 words) Vaping is an alternative to smoking cigarettes and other materials. Electronic vaporization, or vaping, as ecome much more popular during recent years. There are benefits and drawbacks of using vaping devices, and what follows is a list of the pros and cons of vaping. Benefits of Vaping 1. Reduction of Odors and Stains Many people are repulsed by the smell of cigarettes and cigars. Tabacco may remain in clothes, furniture, curtains, cars lining, hair…

The atomic number to my element is 11, the mass number is 23, the number of neutrons is 12, the protons are 11 and the electrons are also 11, the electron configuration of my element is 1s22s22p63s1. The person who discovered my element is Humphry Davy. He discovered sodium in 1807. Origin of sodium is derived from the English word ‘soda’. The appearance of sodium is soft metal that tarnishes within seconds of being exposed to the air. It also reacts vigorously with water. Used as a…

Dmitri Ivanovich Mendeleyev, born on February 8, 1834, was believed to be the youngest of 14 children. His father, Ivan Pavlovich Mendeleyev was a teacher at a local gymnasium. Around the time Dmitri was born, his father went blind and later died in 1847. Consequently to support the family, his mother Mariya Dmitriyevna Kornileva began working at a small glass factory in a nearby town, and eventually started managing it. On December of 1848, the factory burned down, and the family moved to St.…