Rare earth element

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…

What is a camera obscura? What is the principal of optics that makes it work? “A camera obscura, which is literally means ‘darkened room.’ It uses a lens and a sequence of mirrors to project an image of the surrounding landscape onto a viewing surface.” (http://www.scopex.co.za/files/Camera-obscura-ML-1207.pdf) “The principle of optics that makes it work was light travels in a straight line and when some of the rays reflected form a bright subject passes through a small hole in thin material…

Cobalt: The element Cobalt it is located on the periodic table, Group 9. Cobalt is the 27th 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…

textbook. While his textbook did have a few errors it made important advancements such as defining a chemical element as a substance that cannot be reduced in weight by a chemical reaction. Not only did he make these discoveries and observations but he also assisted in creating the metric…

gases are the group of elements which are like no other elements. The noble gases are the elements grouped as the last group, group 18. These elements, from smallest to greatest atomic mass, are Helium, Neon, Argon, Krypton, Xenon, and Radon. Group 18 wasn't always called the noble gases. this group used to be called the inert gassses. They changed the name of thisi group because they are not always inert, or chemically inactive. the first element in this group is the element Helium.…

Today we might know an atom being the smallest piece of an element that represent an element, but you might not know the whole story. It all being in 1803, when a curious guy, known as John Dalton, who proposed an “atomic theory” with spherical solid atoms based upon measurable properties of mass. Later on Dalton introduced his belief that atoms of different elements could be universally distinguished based on their varying atomic weights. John Dalton's research not only changed the face of…

Mercury Claiming the life of Karen Wetterhahn, this chemical element has been proven mesmerizing but also fatally dangerous. Today I will be talking about the physical and chemical properties of Mercury, How the properties of mercury are useful in society, and the harmful effects mercury has to the human and environment. Mercury has 5 main physical properties including color, luster, conductivity, surface tension, and density. The chemical properties of Mercury include toxicity, oxidation,…

included in the periodic table of elements with the abbreviation At and an atomic number of 85. Considered a Halogen and sharing many traits of Halogens, especially Iodine, astatine lies in column seven and period six of the current periodic table. Like many of the elements, astatine’s initial inspiration for discovery was to fill-in a missing part of the periodic table. In 1872, Dimitri Ivanovich Mendeleev wrote a paper on the periodic table which included the element francium. As noted in…

Formula of a Hydrated Salt 2.Objective- We are trying to figure out the formula of a unknown hydrated salt. In order to do this we must know the formula to calculate moles which is moles=Mass(g)/Molecular Weight. 3.Introduction- We must know about hydrated salts which are salts that contain water. We are trying to figure out the molar mass of the hydrated salt given to us. In order to do this we must heat up a hydrated salt so that it reverses the reaction and removes the water.We then are…

Morris Travers founded neon in 1898, by experimenting on liquid air. Prior to discovering neon they had recently found krypton, then later on they would go to discover xenon. “ Ramsay knew that sometimes one element could stay hidden behind another element (Stewart www.chemicool.com/elements/neon.html).” Neon was actually named by Ramsay’s son and was named neon after greek words neos (which means new). After Ramsay and Travers were able to keep finding neon it opened up a path for French…