Zinc

The purpose of this lab is to show the effects of removing zinc from a galvanized nail. Galvanization is used to prevent the rusting or corrosion of a metal substrate, which in this case is iron. Corrosion of metals is a deterioration of a metal over time as a result of chemical reactions between it, and the surrounding environment. When iron gets rusted, the rust flakes off and leaves holes behind. The iron isn’t very strong anymore, and so for economic benefit, iron can be galvanized so that it lasts longer. Galvanizing is used in many applications like street light poles and garbage cans. It is important that companies use a good amount of zinc because once this zinc layer has corroded away, the metal surface will no longer be protected, making the metal surface of the product susceptible to corrosion. Companies are concerned with having a thick enough zinc layer to keep the substrate from rusting while also keeping the cost down. Galvanization is the process of applying the zinc to iron or steel. Galvanization protects the substrate by preventing corrosive substances from reaching it. When exposed to the atmosphere, zinc reacts with oxygen to form zinc oxide, which further reacts with water molecules in the air to form zinc hydroxide. Finally, zinc hydroxide…

The zinc oxide created from the roasting process is leached with an electrolyte that is rich in sulphuric acid. This dissolves the oxide and forms zinc sulphate ("Zinc", 2016). ZnO(s) + H2SO4(aq) > ZnSO4(aq) + H2O(l) (Not a redox reaction) The zinc sulphate is then filtered to remove suspended matter. The solutions is then treated with zinc dust to get rid of less electropositive metals. An example of this is getting rid of cadmium. Cd2+(aq) + Zn(s) > Zn2+(aq) + Cd(s) Before: Cd:2+ Zn:0…

Title: Stoichiometry to Calculate Reaction of Zinc and Iodine and Law of Conservation of Mass Authors: Sang Nguyen and Sami Biro Introduction II. Materials and Methods A. Materials Zinc (Zn), iodine (I2), acetone (C3H6O), acetic acid (C2H4O2) and zinc iodide (ZnI2) were used to conduct this experiment in order to confirm the validity of the law of conservation of mass as well as to use Stoichiometry to calculate the reaction between zinc and iodine. There are some precautions that one must…

Zinc is an essential mineral that can be found in many foods or dietary supplements. The mineral zinc is found in the periodic table with the symbol ZN and has an atomic number of thirty. Zinc is one of the more abundant elements in the Earth’s crust, the twenty-fourth most abundant, and it contains five stable isotopes. This mineral is also known as an essential trace element, meaning the human body only requires a small amount to be considered healthy. One of the health benefits of zinc…

Zinc and Immunity Various aspects of immune system are affected due to zinc (6,7,8). For normal development and function of cell mediated innate immunity, neutrophils and natural killer cells, zinc is essential element. The deficiency also affects the macrophages. The deficiency also affects adversely the growth and function of T and B cells. Besides zinc is an essential element needed for the synthesis of DNA, transcription of RNA, and activation of cells. Cytokines are adversely affected in…

Identities of Zinc, Sodium, Beryllium, Copper and Boron By: Shreya Uppala, Lizzy Jolly, and Kyrie Harrell Results: The first element we tested was zinc. Since zinc was already known, the density was stated to be 7.13g/mL and the hardness was a 2.5 based on the Mohs Hardness Scale. No magnetic attraction was observed when in contact with a magnet. Zinc had a shiny appearance with a light gray color and the strips of zinc added to solution were approximately 5 cm. When zinc was tested with water…

industries, the element zinc exists as a crucial factor within the world’s scientific realm. This bluish-white, lustrous metal was previously used in various industrial alloys and for medicinal purposes as early as 2,500 years ago by the Romans and Palestinians (“Zinc,” 2016). Greater rates of zinc production then began in India during the 13th century by heating mineral calamine with wool, yet no reference to it being its own discrete metal with its own scientific properties was made until…

Corrosion is when metals or other materials corrode over time. “Corrosion is a two-step process that requires three things: a metallic surface, an electrolyte, and oxygen. During the corrosion process, surface-level metal atoms dissolve into an aqueous solution, leaving the metal with an excess of negative charge.”(Corrosion, Boundless Chemistry, First two bullet points) The nail will undergo a corrosion process as it is placed in the cup filled with salt water. However, depending on the coating…

Discovered as a deficiency in the early 60’s, the chemical element zinc serves multiple roles in the body. Zinc travels through the body by protein which assists other proteins with metabolism. Moreover, zinc play a role in growth, development, behavior, and learning. In addition, zinc aids hormones such as thyroid and insulin. Zinc deficiency remain common in developing countries while less common in the United States…

in the concentration of metal ions of the cathode in a Zinc-Copper electrochemical cell affect the electrical potential? Introduction: In a highly technological and quickly developing society, it is imperative to innovation that basic components are understood and explored to further expansion and advancement. In order to understand how everyday necessities such as cars, computers, and cell phones are constantly powered, it must first be understood what is in a battery as well as what happens…