Chemical engineer

potentially get any worse. How the contents of instant cold packs help them work. 2. Instant hot and cold packs work by using chemicals that wither absorb a lot of heat quickly or release heat when absorbed in water, when a process absorbs a lot of heat it’s called an endothermic reaction ; when a process releases a lot of heat it’s called an exothermic reaction, the chemical ammonium nitrate Is quite often used in cold packs because it absorbs a lot of heat when soaked in water, water and…

Abstract: Amylase in the body is used to break down polysaccharides into monosaccharides. The monosaccharides are simple sugars that are used to give the body energy. This effect was investigated in an experiment designed to show the breaking down of starch solution. A water bath was used to heat water up to 60oc. Pieces of dialysis tubing were wet and had starch solution put inside. Half of the measuring cylinders were filled with 60oc water, and the other half with 25oc water. Tests of the…

Copper Cycle Experiment Date: 31st may 2016 Experiment Time: 1: 30 pm Purpose This lab experiment is divided into two parts A an B . In part A , we will start with our given solution of and synthesize a number of copper compounds by chemical reactions and observing every colour change and appearance, As a final step of part A , we will recover copper metal . In Part B we will synthesize two copper (I) compounds and observe their reactions . However we also get to learn using new…

Chemistry plays a vital role in everyday life even though it may not seem like it. One of these things include firearms, which exhibits chemistry throughout the whole entire process. They show chemical and physical properties ranging from the gunpowder to the actual process of firing a bullet. Gunpowder is what makes the whole reaction occur. Without the use of chemistry throughout a firearm, would make it useless and it wouldn't work. These uses of chemistry occurs so fast that you may not…

Clock reactions are an appealing way to show different type of chemicals having a reaction towards each other. This type of chemical reaction shows the demonstration of chemical kinetics. Iodine clock reactions were discovered by Swiss chemist Hans Heinrich Landolt in 1886. The procedure of conducting an iodine clock reaction consist of two colourless chemicals being mixed together. After a short period of time the two colourless chemicals will react with each other causing there to be a colour…

Nitric acid and brass pellets (copper) were set to react under a fume hood. The scientist observed the once liquid acid turning a green color, and the release of an orange gas due to violent fizzing/bubbling on the surface of the copper pellets: a chemical reaction. Because nitric acid is a very strong acid that is weakly bonded, it violently reacts with the metal. After about 30 minutes, the scientist noted the once clear liquid was now a dark, rich, blue aqueous Copper (II) Nitrate solution.…

Recent studies have shown that direct physical contact of the human body with the surface of the earth (grounding or earthing) produces profound quantifiable physiological effects. A reasonable hypothesis to explain the benefits is that a direct connection to the earth and the human body allows the abundance of free electrons to flow from the ground to the body. It is proposed that because there is sufficient evidence to suggest that earthing has positive effects on physical health, the influx…

and Hydrochloric Acid Lab, we concluded that the chemical reaction that occurred was exothermic and a single displacement reaction. The experiment consisted of zinc (Zn) and hydrochloric acid (HCl) being mixed in a test tube immersed in water. First of all, bubbles were produced during the reaction. Also, a white powdery substance was produced with properties different from those of any reactant. The bubbles suggest that the reaction was a chemical reaction as bubbles indicate a formation of…

Introduction Quartz is one of the most plentiful minerals on earth, and it is found in various igneous, metamorphic and sedimentary rocks. Clear Quartz is composed of pure silicon dioxide, and has nearly smooth sides with naturally faceted points at one or both ends. Clear Quartz is also known by the name Ice Crystal, which was derived from the Greek word “krystallos,” which means “icy cold.” (1) Greek philosopher’s believed that this crystal was water frozen so hard that it could never thaw.…

The objective for this lab is to construct a solubility curve for potassium nitrate in water by measuring saturation temperatures for six different solution concentrations. We form a group of four and were assigned to work on series one while the other group work on series two. Throughout the lab, we set a hot bath water temperature at 85 degree celsius which affected how potassium nitrate dissolves in water and changed the saturation temperature. In addition, our group discovered that the mass…