Atom Egoyan

atomic number. (BBC Bitesize. Atoms and the periodic table. 2014) Gold: Au, Arsenic: As, Molybdenum: Mo, Barium: Ba, Lead: Pb, Niobium: Nb, Technetium: Tc, Rhodium: Rh, Scandium: Sc TASK 6 The periodic table distinguishes metals from nonmetals, as the metals are present on the left hand side of the…

absorbance in a sample is proportional to the concentration of the metal atoms in a sample. While testing is occurring, an aspirator is placed into the sample of water. A voltage is sent across the electrodes and excites either Mg or Ca inside the lamp of the spectrometer. When these excited atoms relax, monochromatic light is produced and passed through the water sample. While passing through the sample, some of the atoms will absorb this light. Different spectrometers will be used for each of…

duo, inventing a new, complex idea that was later named the neutron. In the beginning of the Twentieth Century the atom was imagined of two types of particles: protons and electrons. The problem with thinking in these terms was that the atomic mass measurements were not matching up with the atomic number, or protons in the nucleus of an atom. An example of this is the helium atom who has the atomic mass of 4, but a positive charge of two and negative charge of two. Positive charges have mass,…

1. Calcium is the fifth common element in the earth’s crust, and is found predominantly in feldspar, calcite, dolomite, and apatite, as a primary and secondary mineral. Calcium is found in lime stone but is also added as lime and in fertilizers. However, Calcium is not added as the soil is insufficient in Calcium, but to increase the pH. Calcium is a macro-nutrient which is essential in plant growth, the functioning of root tips, and is a main constituent in the cell wall. The amount of Calcium…

Introduction Water is a chemical compound comprised of two hydrogen atoms and one oxygen atom and is written in the chemical equation form of H2O. Water has a tetrahedral molecular shape which is also known as tetrahedral electron pair geometry (Ophardt, 2003). This arrangement is due to valence electron pairs, mutually repelling each other at a 109.5-degree angle. This repulsion is caused by a non-bonding pair of electrons and two hydrogen atoms which in turn repel against each other to form…

Introduction In order to create a compound, there must be two or more atoms that bind together. These atoms may be made up of different elements, or some may be the same. There are two main ways that atoms bind together- covalently and ionically. In a covalent bond, two non-metals of similar electro negativities come together to share electrons with each other. These electrons come from the outer-valence shells, and are shared in a way so that both electrons can have satisfactory shells,…

Question 1 What happen if a person touch liquid nitrogen avoiding the atomic repulsion? It will produce an explosion or nothing will happen? Question 2 It is possible to create an artificial neutron start with the knowledge that humanity have nowadays atoms? (I do not really sure if this question can be considerate part of the course, but at the same time that I watch the podcast, I start to search about neutrons and I found this video in You Tube about the neutron starts, it is origin and it…

Water is a compound containing 2 hydrogen atoms, but also has an oxygen molecule as well this means it has the molecular formula of H2O. The relative atomic mass of water is around 18 with “11.188% being hydrogen and 88.182% being oxygen” [1]. When bonded it forms a covalent bond, “each hydrogen atom shares an electron with the oxygen atom” [2] but these electrons are not held in equilibrium. An oxygen atom attracts the electrons more than the hydrogen atom. This is because of the oxygen being…

Introduction Interhalogen compounds are molecules containing two or more different halogen atoms. The general formula for interhalogen consists of XYn, where n is equal to 1,3,5 or 7 and the central halogen, X, being less electronegative than halogen Y results in the formation of polarized covalent bonds. This experiment consisted of using experimental techniques to synthesize and decompose highly reactive, thus unstable, interhalogens that seemingly violate the octet rule. Synthesis…

There are numerous scientists who have positively impacted the field of Chemistry; from Robert Bunsen to George Washington Carver, chemists have and continue to shape the publics knowledge of Chemistry. However, one chemist stands out from all the rest because of his historical, societal, and person significance: George Claude Pimentel. Pimentel’s life, work, and contribution to Chemistry have shaped this field and impacted it in ways that other scientists have not. Background George Claude…