Meta element

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…

Atoms: They’re the smallest object that create the properties of an element. Comprised of the subatomic particles: electrons, protons and neutrons. For which the Nucleus contains the Protons and Neutrons, while electrons orbit around the nucleus. The atom is a fundamental piece of matter. Atoms are the building blocks of matter and matter builds up the Universe. A Valence Electron is an electron, which is a subatomic particle of an atom. Valence electrons are located in the outermost shell of…

The purpose of the whole lab is to use my knowledge of the periodic table to determine the identity and physical properties of each unknown element. To find the unknown elements we looked at the characteristics of the other elements and grouped the ones that were similar and belonged in the same column. By looking at the characteristics of the unknown elements if it seemed to belong in a group with others with a blank we assumed it belonged there. Mendeleev was a scientist who came up with the…

The purpose of this lab is to understand how the elements in similar groups are together because of similar properties the elements share. Like Mendeleev, we had made connections toward the creation of the periodic table. When finding the unknown elements we used other known elements as guides and looked for similar properties. Like the Periodic Table today, it is organized through similar properties of each element and categorized in groups. Dimitri Mendeleev was a chemist from Russia who lived…

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 are identical in properties and mass. Dalton stated that compounds are formed by combining two or more different types of atoms. Lastly, Dalton said that a chemical reaction is the rearrangement of atoms.…