The Elements

and Overview Elements are the substances that make up everything in the universe, known and unknown. This means that elements are what make up matter, and everything you see, hear and touch. There are 118 elements known to man, some that you may know include gold, iron and oxygen. Each of these have distinguishing qualities and they come in 3 different states of matter, solid, liquid and gas. Some of these are man-made but most have been discovered. The things that make each element have a…

The Purpose of Mendeleev’s lab was to try to understand and identify the 9 unknown elements that were given. We had to relate it to Mendeleev’s lab of 1869, using his perspective and his methods. For example , he did things like laying out the elements from lightest to heaviest and by the colors. By studying its physical properties and observing the examples given we could identify the elements that were given. Using his methods really helped me understand his point of view, he used the…

periodic trends of the first 36 elements that are on the periodic table. Trends that were analyzed and examined are the atomic radius (AR) and the first ionization energy (IE) of the 36 elements. The hypothesis for this lab was that the elements that are in the groups that had the highest atomic radius would be in the same groups as those who have the the highest first ionization energy and the groups who have the lowest atomic radius would be in the same groups as those elements who have the…

Magnesium Magnesium is one of the best elements you can own it’s a 3rd period element its part of the alkaline earth metal family. Magnesium is a metal and it’s a solid, with a isotope of 24 and really high energy level. Buy magnesium it’s going to be your favorite purchase you will ever make you won’t regret it. Magnesium was discovered in 1808 by a guy named Sir Humphrey Davy but it was first experimented by joseph black. The Country it was discovered in was England in the United Kingdom.…

about 20.180. This element was discovered by Sir William Ramsay in 1898 and contributions also came from Morris Travers. I will go into greater detail about how they discovered neon later into the essay. Neon’s atomic number on the periodic table is 10. It is also odorless, colorless, and non-toxic. As I stated earlier, neon was discovered at the University College London by Sir William Ramsay and Morris Travers in 1898. However, this was not the first element discovered by Ramsay…

heated the mineral pyrolusite (MnO2) and in the presence of charcoal, found element 25, manganese in the year 1774. This silvery-metallic element has an atomic mass of 54.938049 rounded to 55 with 7 valence electrons. Manganese is a transition metal in group 7, period 4. Manganese is very flammable and dangerous with very strong intensity! It’s found in the earth’s mantle while having a melting point of 1246℉. The element manganese stimulates functions of the human body and resembles iron while…

Looking at the period table, there are many elements, but Magnesium is the one needed for or enzymes to function properly. In addition to this, Magnesium has other roles to play in one’s daily life. In fact, the element is the eighth most prominent in the earth’s crust, but it isn’t a free metal. Thankfully, there are numerous minerals in Magnesium. Two of the most common minerals are dolomite and magnesite. These minerals and the element itself can be discovered in sea water. Saying this, come…

most interesting. After doing some research on the boom I found that it had great reviews online, and was one of the top ten most recommended books in the chemistry genre. This book caught my attention because it gave a brief history of many of the elements, and I was keen to learn how to incorporate chemistry into my daily life. Synopsis- The Disappearing Spoon starts off with an introduction in which Sam Kean narrates how he fell in love with the science of chemistry, because as a child he…

Every element has its own symbol ,atomic number ,and atomic mass. The symbol is letters of the element, atomic number is the number of protons, and atomic mass is the mass of the element. The Symbol for Calcium is `Ca’ and the atomic number is 20, and the mass number is 40.078 u. Family. The periodic table is classified into groups and every group(row) has its own properties. Calcium is in group 2 ,and this is the second most reactive group of the periodic table. Each of the elements in…

– equation (2 gives info on location of electron in terms of probability density - wave functions are called orbitals – [pic], where E is energy, e2 is electric potential, r is orbital radius and h is Planck’s constant 1925 Wolfgang Pauli – each orbital has only 2 electrons is now explained due to direction of spin of electrons. Spinning electrons create magnetic field. Only 2 electrons of opposite spin in an orbital referred to as Pauli exclusion principle Hund’s rule – half fill…