Chemistry Essays

Carbon was chosen by life because it is the second most abundant element in the human body, comprising 18% of its wet weight. Organic molecules, found mainly in living matter, are primarily carbon-based. These molecules make up the majority of molecules in all living organisms, from plants to humans. Carbon possesses four distinct characteristics, one […]

Engineering Materials Week 2-interactivity What is the difference between crystal structure and crystal system? A crystal structure is described by both the geometry and atomic arrangements within cell, whereas a crystal system is described only In terms of the cell geometry. For cubic crystals, as values of the planar Indices h, k, and I Increase, […]

To identify the chemical changes 2. To observe the effect of temperature of a chemical reaction. Theoritical basic : A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking […]

Chemistry Catalyst Report Aim I am trying to investigate the effect of the mass of magnesium dioxide used on the speed of the reaction of 2H2O2(aq) 2H2O(l) + O2(g). I hypothesize that the speed of the reaction is proportional to the rate of decomposition. Independent Variable The mass of MnO2 used Dependent Variable The rate […]

Abstract The preparation of 7. 7-dichlorobicyclo heptane which is also known as 7,7-dichloronorcarane was done by reacting cyclohexene , chloroform and a base( 50% aqueous sodium hydroxide) with benzyl triethylammonium chloride. The latter being a water soluble phase transfer catalyst (PTC). reaction was performed at room temperature and was distilled at atmospheric pressure. The mechanism […]

Abstract This experiment aimed to monitor the efficacy of the Barley Amylase Enzyme in breaking down starch in solutions with increasing neutral pH levels. The experiment involved simultaneously mixing tubes containing a reaction solution of Amylase enzyme and starch. The reactions were then stopped using I2-KI at two-minute intervals. To ensure accuracy, each trial was […]

Determining the Optimal Temperature and PH of Barley Amylase Abstract The purpose of this experiment was to find the optimal temperature and pH of barley alpha-amylase. I hypothesize that the optimal temperature would be 55 degrees Celsius and the optimal pH would be 5. 5. In this experiment, the starch is used as a substrate […]

Enzyme Activity Lab Hypothesis: Are enzymes reusable? Yes, enzymes are reusable. Which of the following do you think contain catalase? [Manganese dioxide, chicken meat, apple, carrot, potato, or chicken liver] I think that the manganese dioxide, apple, and carrot contain the catalase. Would grinding the materials affect enzyme activity? I think that grinding the materials […]

An Investigation on the rate of reaction of the enzyme Catalase on the substrate Hydrogen peroxide. Plan Aim: To investigate the rate of the effect of Catalase on hydrogen peroxide. Introduction This investigation will be carried out to investigate the rate of reaction of the enzyme catalase on the substrate hydrogen peroxide. Enzymes are biological […]

Comparing the enthalpy changes of combustion of different alcohols Aim In this experiment I will investigate the enthalpy changes of combustion. In particular I will be investigating the enthalpy change of combustion for different alcohols. I hope to investigate some of the homologous series alcohols, as well as a few structural isomers of these alcohols. […]

For this reaction the heat of dissociation is equal to the HO-OH bond energy. Since it is difficult to measure the heat of this reaction directly, you will use Hess’ Law to determine DHdis. Hess’ Law states that since the enthalpy is a function of state, it does not matter how the final state is […]

Abstract: In this Extended Essay I am investigating the pH of the acid rain in Munich by titrating the collected rain water in Munich. I am also investigating the effects of the acid rain on the buildings in Munich which are made out of limestone and I am also working out how long it would […]

By adding methyl bliss-scrambled, a cross-linking agent, to creamily, a gel matrix was formed. An immobilized enzyme was then tested for its activity and stability through spectrophotometry assays at 510 nm, as compared to its free enzyme counterpart. The enzymatic reaction was examined by introducing hydrogen peroxide (H2O), phenol, and 4-mountaineering. To test the stability, […]

A desiccation reaction of an intoxicant consequences in an olefine. This type of reaction requires an intoxicant. an acerb accelerator and heat. Generally strong concentrated acids. like sulphuric acid and phosphorous acid. are used as the acerb accelerator. The acerb accelerator protonates the intoxicant. to do a much better go forthing group. Weakest bases make […]

Enzymes, as biological catalysts, are essentially proteins composed of amino acid polymers. Their tertiary structure results in a globular shape, due to molecular bonding. Various bonds contribute to maintaining the structure’s shape, with the strongest being the di-sulphide bridges between cysteine amino acids. Hydrogen bonds are also present, but their strength increases when many exist. […]

Enzymes are proteins that act as catalysts. They speed up the chemical reactions which occur inside living things. Without them, all reactions would be far too slow, and living organisms would not be able to function. Enzymes are extremely efficient at doing their job. Some of the chemical reactions, which take place in our cells, […]

For this investigation, we are going to find out how different enzymes (in this case, trypsin) concentration in a solution would affect the rate of which solute (Casein) is broken down. I think enzyme concentration would definitely have an effect on the rate of reaction. My hypothesis is that increasing the concentration of trypsin would […]

The word and chemical equation which I have constructed for the experiment is:Calcium + hydrochloric calcium + water + carbonCarbonate acid chloride dioxide.CaCo3 + 2HCL CaCl2 + H2 O + CO2Reactant ProductI chose this reaction because it is easy to control as the production of carbon dioxide being produced can be monitored with ease. Additionally […]

To produce your own solutions, it is crucial to give answers using your own terminology based only on the given text or eBook, rather than taking content directly from an external source (such as copying and pasting from an “answer” website). The use of direct Information from an outside source Is against school policy. All […]

When sodium bicarbonate and clerk acid mix In water they dissolve, the sodium bicarbonate reacts with the clerk acid to form sodium citrate and carbon dioxide. The carbon dioxide then bubbles out as a gas, which makes the bath bomb break up, In this experiment 3 tests will be conducted In order to find the […]

Abstract The purpose of this experiment was to find out how a reaction undergoes for a globally known painkiller called aspirin, and to become familiar with achieving successful yields. Aspirin Is synthesized from salicylic acid and acetic anhydride. Those two chemicals are mixed together along with sulfuric acid to form a crude solid. Filtration is […]

Unsolved problems in chemistry tend to be questions of the kind “Can we make X chemical compound? ” , “Can we analyses it? “, “Can we purify it? ” and are commonly solved rather quickly, but may Just as well require considerable efforts to be solved. However, there are also some questions with deeper implications. […]