Electron microscope

every new proton being added, several electrons will also be included into this process by joining the identical energy level (ultimately accounting for one electron per element in said period). The electrons then attract the protons, whilst failing to shield from or repulse this attraction. Given the above information, the effective nuclear charge will most certainly increase. When traveling down a group, the atomic radius will increase and the valence electron sets of each element will become…

The stories Conducting Solutions, Energy Story, and the video Hands-On Science with Squishy Circuits have all helped me learn a lot more about electricity. The purpose of these sources were to help the reader to understand and inform the reader about how electricity is made. It also showed how easy it is to make electricity. These three sources have many differences and similarities but they all serve the same purpose. In the video Hands-On Science with Squishy Circuits it talks about how easy…

Helium was discovered by Sir William Ramsay and independently by N. A. Langley and P. T. Cleve at 1895 in England and Sweden. A French astronomer Janssen first obtained evidence for the existence of helium during the solar eclipse of 1868 in India. For many years helium was known as an element that might exist on the sun but unknown on the Earth. Sir William Ramsay discovered helium after treating a uranium mineral. Lockyer and Professor Edward Frankland suggested the name helium. A sample of…

share pairs of electrons. Atoms will covalently bond with other atoms in order to gain more stability, which are gained by forming a full electron shell. By sharing their outer most valence electrons, atoms can fill up their outer electron shell and gain stability (Chem wiki) Nonmetals will readily form covalent bonds with other nonmetals in order to obtain stability, and can form anywhere between one to three covalent bonds with other nonmetals depending on how many valence electrons they…

Chemistry As Carl Sagan once said, “Chlorine is a deadly poison gas employed on European battlefields in World War I. Sodium is a corrosive metal which burns upon contact with water. Together, they make a placid and non-poisonous substance, table salt. Why each of these substances has the properties it does is a subject called chemistry.” Chemistry involves many things, from atoms to elements and their functions. It is a wide field of science with an extensive early and modern history. It also…

One of the main experiments Rutherford is known for is his Gold foil experiment. He devised a way to prove that radioactivity in particles exists in at least two forms. In the experiment tiny alpha particles were shot at a sheet of foil coated in ZnS which resulted in a small percentage went through the sheet and the rest were blocked/deflected. The percentage of particles that were able to go through the foil are now named 'Alpha Particles' and the ones that were blocked are called 'Beta…

up of protons, neutrons, and electrons. Protons and neutrons are in the center of the atom, while the electrons stay far apart from each other, and revolve around the center. This is called the Bohr model, made by Neil Bohr in 1913. Neil Bohr was born on October 7th 1885. His father was a physicist and Neil graduated from Cambridge in 1911. His studies were theoretical, and the following year he worked in a laboratory in Manchester. It…

reactivity chemically. It’s properties are mostly intermediate between aand similar to those of its group neighbors calcium and barium. When it is exposed to air, the metal forms a dark oxide layer. Strontium has 38 protons, 50 neutrons, and 38 electrons. The electron configuration of Strontium is 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 3d^(10) 4s^(2) 4p^(6) 5s^(2) or [Kr] 5s^(2). Strontium has an mass number of 87. Strontium can be a naturally element that can be found in rocks, soil, dust, coal,…

equivalent number of positive and negative particles. When an external object that has an electric charge comes in contact with the conductor, the positive and negative particles will separate. The electrons with the charge opposite to that of the external charge will be drawn to that outside object, while electrons with that equivalent charge as the external object will repel and move away from the object. This redistribution of charges is also known as electrostatic induction. Hence, the way a…

Chemistry, oh chemistry! Chemistry is an interstmig subject. Withourt it we would not know many of the thigns we do today. However, with chemistry comes a lot of studying and hard work. There are three bonds in chemistry ionic, covalent, and hydrogen. Do not ask me why they named them this because I am unble to tell you this. However I can tell you that SCl2 is an ionic bond and NaCl is a covalent bond. Well, that is that the atoms in them form those types of bonds. Hard to belive I know, but…