5-CinthiaV-Selenium The name of my element is Selenium. The element symbol is “Se”. Selenium was discovered in Sweden by Jons Jacob Berzelius in 1817. Selenium is an origin for a greek word meaning moon. Selenium has four energy levels. In the first energy level, it has two electrons. The second energy level has eight electrons. The third energy level has 18 electrons. The fourth energy level has six valence electrons. Selenium has forty-five neutrons. Selenium has the…
Mrs. Moreno Period 5 INTERPRETING THE PERIODIC TABLE Partner’s name: Faranak Hajikhan, Pablo Moncada, 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…
Scerri starts his book off by talking about a few people and describing what they did, and how they contributed to chemistry/periodic table. One person being John Dalton who developed what is known to be modern atomic theory. Another being…
History 10 CCT Table of Contents Billy Bishop - WW1…………………………………. 3, 4, 5 Battle of the Somme - WW1……………………….. 6, 7 Rocco Perri - 1920s…………………………………. 9, 10, 11 The Halibut Treaty - 1920s…………………………. 12, 13, 14 Cairine Wilson - 1930s……………………………… 15, 16, 17 On to Ottawa Trek - 1930s…………………………. 18, 19, 20 Rod Keller - WW2…………………………………... 21, 22, 23 Freeing of the Netherlands - WW2………………… 8 24, 25, 26 Billy Bishop Billy Bishop was a Canadian flying…
To what Extent was torture successful during the Algerian War? Total Words: 1993 Table of Contents A.Plan of Investigation………………………………………………….. 3 B.Summary of Evidence………………………………………………… 4-6 C.Evaluation of Sources……………………………………………….... 7-8 D.Analysis …………………………………………………………….... 8-10 E.Conclusion……………………………………………………………. 11 F.Bibliography………………………………………………………….. 12 A. Plan of the Investigation This investigation will assess to what extent was torture successful during the Algerian…
My Element is the Most Important Element (Argon) •Atomic mass 39.948 •Atomic Number -18 •Gas at 298 K •Density-0.0017837 grams per cubic centimeter •Third Noble gas •Chemical Symbol-Ar •It is also obtained from the air as a byproduct of the production of oxygen and nitrogen •It is the third most atmospheric gas •Argon is colorless and odorless •Argon is non reactive and has no effect on living organisms •Makes up 1% of the air around •Argon is found in the earth’s crust…
book about the periodic table and how each element was discovered and how it affected each scientist when they discovered it. The story shows scientist such as Maria Goeppert, Dimitri Mendeleev, Robert Bunsen, Fritz Harbor, William Crookes, and many more. However, in this essay I am going to write about Dimitri Mendeleev, Robert Bunsen, and Fritz Haber. Dimitri Mendeleev is a very important scientist when it come to the periodic table, he is known as the, “creator” of the table. Mendeleev was…
Introduction: Dmitri Mendeleev is accredited with the creation of the periodic table but in reality, many scientists have contributed in the years leading up to the production. Before people could even write they knew some of the elements that are on the periodic table. The elements include silver, gold, copper, tin, lead, and mercury (substances that could not be broken down chemically). Not until 1649 did a man by the name of Hennig Brand discover phosphorous (an element) through…
Discovery and Organization of the Periodic Table In order to understand the periodic table, a basic knowledge in the terminology would be very helpful. A periodic table a chart organizing elements by atomic numbers and chemical properties into groups and periods. The periodic table was created in order to easily find and classify the different elements that are known. Elements are pure substances composed of just one type of atom that cannot be broken down into anything simpler by ordinary…
Alchemy was the earliest understanding of today’s chemistry. These two display Is Alchemy Chemistry? different pathways of thinking and rationalising rather than two diverse concepts. The practice of alchemy is the basis of chemistry, as it was a vital role of origin and evolution towards chemistry we know today. The comprehension of both alchemy and chemistry will aid in order to establish their connections and difference of opinion or belief. Discovering both histories of the two concepts will…