Experiment 14: Iodine Clock reaction Summary of principles: In this lab we will learn to measure the rate of a chemical reaction between persulfate ion and iodide ion. The order of the action will need to be determined in the order of the persulfate ion to the iodide ion. The method we will use is the Initial rate method. The activation of the reaction will be determined from the temperature dependence rates of the reaction. The lesson of the lab is to teach us about Chemical kinetics, speeds and arrangements of molecules in a reaction during the process it goes from reactants to products.
Each enzyme has a unique shape that determines its function. They do this by breaking down bonds and reforming new ones. This is important because,Although pH is in actuality a measure of the degree of Hydrogen (H) ions in a substance or solution, it is best recognized as a measure of the acid/alkaline balance of anything. The pH scale measures how acidic or basic a substance is and ranges from 0 to 14. This is very important because by measuring the amount of acid in things on the earth, being able to distinguish pH levels harm the earth or help the earth is easier than just taking a wild guess.
Chang (2002) identifies that chemistry is considered as the center of science because it contains essential information which could be necessary for other people who study other sciences such as physics, biology, ecology and geology. In other words, it is fundamental to our life and without it we could not live our life as we live it now. Chemistry is responsible of the study of substances, their components such as molecules, atoms which cannot be seen with naked eye and its physical and chemical properties. Also, it studies the changes that happen to the matter due to their reactions and the energy that come out of the reaction. In addition, it studies the types of matter's reactions such as combustion, decomposition and dissociation.
Since we used our chromatography method, we will be able to figure out which metals our substance contains. It is important to know this especially if we are ingesting and coming in contact with them. Chromatography is a separation technique that works based on the compound interactions as those compounds tend to move within a supporting medium. The compounds interact in two phases; mobile and stationary phase. The techniques help analyzing.
The different uses will depend on the food being irradiated as each technology has strengths and weaknesses. Gamma ray irradiation is very powerful and can penetrate substances deeply. It also yields substantial uniformity of the does in the product and decays to non-radioactive nickel. But the radioactive source, commonly Cesium-137, requires frequent replenishment and treatment of the food is relatively slow. Additionally, protective barriers must be in place when this form is used to protect workers and the environment.
Which could be harmful to humans and animal when we breath we also breathing in carbon. The Phosphorus is representative the chemical the element in three allotropic one is yellow, poisonous and flammable. Phosphorus can also be a molecular to calcium as a mineral to the body and it combines calcium with bones and teeth ETC. Human’s effect the phosphorus by moving the phosphorus around and it become a run off that can end up in water and it cause eutrophication that kill the animals and the plant’s and I believe that how the volcano’s corrupter because once that happen it end up in the water killing everything. Also phosphorus is in are detergent’s and fertilizers.
Aim The aim of the experiement was to prepare copper sulphate crystal using copper oxde and sulphuric acid. Hypothesis Risk assessment Physical hazards are things that may cause a slip, trip, cut, electrocution, blindness, etc. I have looked at some With chemicals you should consider how easily they could escape from their container and contaminate the environment, how readily they could enter the human body and what the consequences of this are. Biological hazards may be air borne or absorbed through the skin and include not only infectious and pathogenic agents but also many organisms that should not be released to the environment. Discard your samples down the sink with plenty of water.
Sulfur is an impurity in some fossil fuels. Explain how the presence of sulfur in fossil fuels can lead to damage to the environment and how the amount of damage can be reduced. Top Tips….. 1. This is an explain question so use point and explain to illustrate each point. 2.
Health effects of many pollutants on humans are not yet known. Although human-caused sources are mostly what pollutes groundwater, naturally occurring contaminants are also pollutants. These can come about if metals such as iron and manganese dissolve into water while it is flowing through rocks and sediments. Groundwater can also be naturally contaminated by hydrogen, sulfide, and decaying bodies. These may not sound as harmful, but they can be just as bad as anything caused by humans.
Lab Report Catalase Enzyme Lab Catalase Enzyme Lab Background: Catalse is an enzyme normally found in many plants and animals. Its purpose is to defend off any toxic substances by destroying them. It is also use by some cells to destroy cellular waste. This lab will demonstrate the effect of temperature and pH on the action of this enzyme. The substrate of the enzyme will be hydrogen peroxide (H2O2).