The only ore that contains chromium is the mineral chromite, which is iron magnesium chromium oxide. Chromite has a high melting point and a stable crystalline structure. The purpose of this experiment is to determine the chemical content of an unknown metal ore sample to confirm that the unknown sample is mineral chromite. The content of the unknown sample will be determined by the use of a type of extractive metallurgy that uses the chemistry of an aqueous solution to remove metals from salts, minerals, and ores. This type of extractive metallurgy is called hydrometallurgy.
Hydrometallurgy to Analyze a Chromite Sample : Chromium can be used in the production of stainless steel and other nonferrous alloys in order to enhance their harden ability and to make the alloys more resistant to corrosion and oxidation. It can also be used to plate metals, make pigments, process leather, catalyze, and treat surfaces. Chromite is the only ore of chromium. Chromite is iron magnesium chromium oxide. Metallurgy can be used in order to recover the chromium from the chromite ore.
Some of the colors were similar but salt solution had its own distinct differences. Flame tests are the best way to determine the color a solution will emit. “Flame tests are a quick method of producing the characteristic color of metallic ions. The colors seen are a combination of the wavelengths of each transition.” Introduction 2: “An atom can react with another atom to form a compound through either a sharing or transfer of electrons in an interaction called bonding.” An Ion by definition is “an electrically charged atom or group of atoms. Metals on the left side of the table, tend to form
Station 7 deals with volatility and if the substances are able to evaporate at normal temperatures. Sand was non-volatile its great composition and able to withstand anything because of its strong particles. From the results of sand, it is determined network covalent because it has high melting point and boiling points and is insoluble in water. The secondary substance is salt and its formula is written as NaCl. Salt is an ionic bond, which is a type of chemical bond that
Argon welding Tungsten inert gas (TIG) welding is the process of blending together reactive metals such as magnesium and aluminum. The TIG welding method became popular and useful in the early 1940s and, as a result, has greatly propelled the use of aluminum for welding and structural processes. TIG welding is commonly used for both high quality and manual welding. During the process of TIG welding, an arc is formed between a pointed tungsten electrode and the area to be welded. As a result of the gas shield, a clean weld is formed.
Main – group metals usually for one cation (positive ion). In a binary ionic compound the metal (cation) is named first. Then the nonmetal (anion) is named, and the suffix -ide is added. To create the formula, you switch the charges, and that tells you how many of each element you will need. For example: Cation Anion Formula Name of Compound Ba2+ I- Ba2+ I- Barium Ion Iodide Ion BaI2 Barium Iodide Type 2: Binary Ionic Type 2 Binary Ionic compounds consist of a metal and a nonmetal.
ABSTRACT In this experiment, a sample of K2S2O8 was prepared by the electrolysis of an aqueous solution of H2SO4 and K2SO4. The peroxodisulfate anion, S2O82-‐, was also observed for its ability to serve as a counterion for precipitation by preparing a copper (II) complex by reacting hydrated copper (II) sulfate with ammonium peroxodisulfate in the presence of pyridine. This same ability, coupled with its strong oxidizing ability allowed for stabilization of the unusual oxidation state of 2+ for silver which was observed by preparing an analogous silver (II) complex by reacting silver (I) nitrate with ammonium peroxodisulfate in the presence of pyridine. IR spectra for the three products were obtained, as well as qualitative tests for Product A (K2S2O8) in comparison with H2O2, confirm the presence of the peroxodisulfate anion and the identity of the individual yields. INTRODUCTION Electrolysis is a widely used technique in the large-‐scale preparation of several industrially important inorganic chemicals, one of which is potassium peroxodisufate.
Copper is too soft to make into tools so when they discovered that it could be made into alloys, mixed with other metals, to make an even harder material. Copper sometimes occurs native and can be found in many minerals, such as cuprite, malachite, azurite, chalcopyrite, and bornite. Very large copper deposits can only be found in certain countries, like Zambia, the U.S., Chile, Zaire, Peru, and Canada. Copper is obtained from smelting, leaching, and by electrolysis on copper sulfides, oxides, and carbonates. Copper is one of the most important metals.
Purpose The main objective of this lab is to use qualitative analysis to understand and recognize the chemical properties of certain Group 1 cations, which are Ag+, Pb2+, and Hg2+, and to use their inherent properties to identify whether they are present in an unknown sample. These three particular cations, known as the Silver Group, can be separated and isolated from each other by forming insoluble chloride salts. Introduction Chemistry is an analytical science, which is based heavily on experimentation and observation. The data that can be obtained through experimentation can be separated into two distinct types of data: qualitative and quantitative. Quantitative data deals primarily with numerical characteristics, such as the weight or amount of a particular substance.
MIG welding is sometimes referred to the ‘hot glue gun’ of the welding world and is generally regarded as one of the easiest type of welding to learn. The heat produced by the short circuit, along with a inert gas locally melts the metal and allows them to mix together. Once the heat is removed, the metal begins to cool and solidify, and forms a new piece of fused metal. MIG welding is useful because you can use it to weld many different types of metals such as carbon steel, stainless steel, aluminum, magnesium, copper, nickel, silicon bronze and other alloys. However the use of an inert gas makes this type of welding less portable than arc welding which requires no external source of shielding gas.