History of the periodic table

Phosphorus is the fifteenth element on the periodic table. It has fifteen protons, sixteen neutrons, and fifteen electrons. It has a mass number of 30.97 and an atomic number of fifteen. Its element symbol is “P.” Phosphorus was discovered by Hennig Brandt in Hamburg in the year 1669. Hennig evaporated urine and heated the residue left behind until it was red hot. This was where the phosphorus vapor was distilled, which he then collected by condensing it into water. Hennig kept his discovery a…

For the project we had in Mr. Sanders Physical science class this nine week I choose to read “The Radioactive Boy Scout.” The book was about a boy named David Hahn who grew up in suburban Detroit. David was fascinated by science and while he was working on earning his Atomic Energy badge for boy scouts, David’s attention turned to nuclear energy. He started working on building a nuclear reactor in his backyard garden shed. Working as a physics professor, David solicited information on reactor…

Throughout history, humans have been overcome by cursitory to figure out the way our universe works. In the past hundreds of years, there have been numerous discoveries that revolutionize modern civilization and the way humans have thought about Earth. One of the most significant discoveries that humanity has found was the fact that everything is made up of elements. The Noble Gases in particular, set the precedent for what all other elements strive to become. Every element in the periodic table…

Tin is a Chemical element its symbol is Sn. Its location on the periodic table of elements is period 5 group 14. Its atomic number is 50 and the atomic weight is 118.71. It has 50 protons, 50 electrons, and 69 neutrons. Tin is a solid, ductile, malleable, silvery-white metal. Tin melts at a low temperature of about 232 °C (450 °F). Tin resists corrosion from water, but can be attacked by acids. Around 5000 years ago, humans first began mining and incorporating tin with copper to create bronze…

read To Kill A Mockingbird, we started a new thing called word voyage it’s a lot of work, but it helps us learn how to write sentence this year. In history this year, we actually learned a lot we learned about The Jazz Age, The Vietnam War, World War II, and we did a lot of fun projects and assignments. In science we learned about the Periodic Table, and we did a really stressful project at the end of the year. In math, my class (the honors) finished…

the water, and rises up roots of plants. Furthermore, it is vital for life to exist on earth, from the grass lions, bears, and humans trample on every day, to the fish and plankton in the ocean. Without potassium, the ninetieth element on the periodic table with chemical symbol “K,” life would be immensely different today, notwithstanding any in the first place. Potassium functions a significant role in lives, more specifically, its ions and compounds. Indeed, potassium is everywhere, but…

It begins with the history of the element; it was one of the first metals to be traded as currency and, in some cultures, was considered to be more valuable than gold. One ounce of it today would be approximately the weight of five quarters and equal to about seventeen dollars…

a solid, shiny, silver metal. Its atomic number is 78, and its atomic mass is 195.084. Its density is 21.45 g/cm3. Platinum has a melting point of 3,215 fahrenheit, and a boiling point of 6,917 fahrenheit. Platinum is in group 10 on the periodic table. It is also a Transition and Platinum Group metal. Like the other elements in the Platinum Group metals, Platinum is very rare and very expensive. Every year 130 tons of Platinum is mined, but it takes 10 tons and 6 months of processing to…

step closer for preparation of my future profession. This year as a sophomore I am taking AP Biology, AP Psychology, Honors Pre-Calculus, Physics 1, and Chemistry 1 simultaneously without any issues or problems. I also have taken AP United States History as a freshman along with seven other courses. Because of this, I understand the demanding nature of these AP courses and the preparation needed to do well. Next year I plan to take three more classes, including two more AP classes, AP Calculus…

the discovery of radioactivity, Marie began experimenting with the different demeanors that the radioactivity offered which led her studies to the discovery of radium and polonium. Marie and her husband Pierre discovered two new elements on the periodic table, and in turn benefitted…