General Atomics Avenger

Demitri Mendeleeve was a Russian chemist who invented the first periodic table in 1869. The periodic table he made was very different from the modern day periodic table we know today. Henry Moseley updated Mendeleev's version of the periodic table in 1915. This is more like the periodic table that we know and use today. The only difference is that there has been many more elements added. Mendeleeve also had predicted a lot of the characteristics and properties of elements that would fill up…

Before talking about the elements, the atom must be discussed first. Atoms are the building blocks of everything—from the structures of a building to a household pet. The idea of the atom was first suggested by Democritus, a Greek philosopher born in 460 BC. Democritus hypothesized “that atoms were indivisible and infinite in size and shape as well as firm and completely solid” and that they “existed in a void moving about combining and recombining” (European Graduate School). Later on, a…

Chapter Six: Completing the Table…with a Bang 1. What is the difference between a “dirty” bomb and a conventional nuclear bomb? (1 mark) The difference between a “dirty” bomb and a conventional nuclear bomb is that a nuclear bomb is designed to destroy organisms using heat and impact, while a dirty bomb is designed to kill with gamma radiation. Radiation from dirty bombs, besides burning through skin, also alters the DNA in bone marrows, which significantly weakens the body’s immune system, and…

The atomic number for Neon is 10, keeping in mind that the atomic number is the number of protons in an element. The atomic mass of Neon is 20.180, which when rounded up will become an atomic mass of 20. The state of matter Neon is mainly in is a gaseous state. The full electron configuration of neon is 1s2 2s2 2p6, and the abbreviated electron configuration…

The element Titanium is a very light metal and it’s in the periodic table group 4. This element is a transition metal and the symbol is Ti. The color of titanium is a silver grey and white color. The atomic mass is 47.867 and atomic number is 22. This element however is resistant to chlorine, and sea water. It has 22 electrons, 22 protons, and 26 neutrons. The density is 4.54 The discoverer who found titanium is William Gregor a Mineralogist. The year it was discovered was in 1791. Where it had…

element on our Periodic Table. It is a chemical element, it has a density of 8.9 grams per cubic centimeter. Cobalt has a boiling point of 3,100 degrees Celsius (5,600 degrees Fahrenheit). Cobalt’s symbol is Co, The atomic # is 27 so the protons and electrons are 27 as well. Cobalt has an atomic mass of 59 and 32 neutrons. The melting point is 2,719 degrees Fahrenheit. This element was discovered in 1735 by a Swedish chemist, Georg Brandt. Brandt was the first person to discover a metal…

substances different properties. Democritus’ work, however, did not survive through the Middle Ages. Democritus had no real evidence to prove his theory, but he was close to the truth about atoms. In the year 1803, John Dalton contributed to the Atomic Theory. He came up with his own theory of atoms after researching pressures of gases. Dalton’s theory included that all matter is made of atoms. He said that atoms are indivisible and indestructible. He also theorized that atoms of an element…

Albina Contreras and Karla Santos Title: Interpreting the Periodic Table Date: 12-18-14 Subject: Honors Chemistry / Period 5 Introduction: The periodic table is a table of the chemical elements in which the elements are arranged by order of a atomic number. The periodic table also has a special name for its vertical columns. Each column is called a group. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence…

lead him to find out that light always travels at the same speed (which is 186,000 miles/second). Albert Einstein’s career, beginning with an extensive education through physical science, had a lasting influence on the photoelectric effect, Special/General Theory of Relativity and the concept of mass-energy equivalence. Albert Einstein was very curious beginning at a young age; he started studying the physical sciences and learning music. Born into a non-practicing Jewish family in Ulm, Germany…

The Canterbury Tales is a compilation of stories written by Geoffrey Chaucer around the 14th century. Chaucer was the son of a middle-class merchant, he was constantly around the docks as a kid, so he picked up a lot of lower working class jokes, humor, and mannerisms. When he grew up he worked in the royal court, so he got to also see upper-class life in this time. So Chaucer, knew how every class acted, and he knew that they were not so different, despite their social stratification. Although…