Chemistry Essays

In my coursework I will investigate about enzymes in potatoes reacting with Hydrogen Peroxide. In particular I will investigate the effects of changing the surface area of a potato when added to Hydrogen Peroxide. This is because, when increasing the surface area of the potatoes it will increase the rate …

The purpose of this experiment was for students to prepare some simple organic compound and to purify the compound by recrystallisation. This experiment allowed the students to conduct the synthesis of aspirin, acquire the skills of recrystallisation using normal filtration and reinforce the technique of the melting point determination. The …

The knowledge of chemical analysis today has become important not only for scientists in their research but in fact bears influence in our daily routine as well. To recognize and classify these uses, we have to first understand, what is chemical analysis?Chemical AnalysisChemical Analysis is a body of procedures and …

The short story entitled “Chemistry”, written by Graham Swift, is filled with rivalry between family members and the difficulties that come from trying to maintain a healthy relationship when everyday life is riddled with deception and insecurity. On a basic level the story is built around general human nature and …

Duralumin, also called duraluminum, duraluminium or dural is an alloy of aluminium (about 95%), copper (about 4%), and small amounts of magnesium (0.5%-1%) and manganese (less than 1%). It is far better in tensile strength than elemental aluminium, though less resistant to corrosion. Its heat and electrical conductivity are less …

Acids and Bases are two groups of chemical compounds that generally have opposite characteristics. They have there own unique traits, acids taste sour, turn litmus red while bases taste bitter and turn litmus blue. The term pH relates to measuring the acidity or alkalinity of a solution, such as vinegar, …

For this experiment we tested the effects of different adrenalin concentrations (0.001%; 0.01%; 0.1%) on the daphnia flea. The daphnia was placed on a slide with cover slip in order to examine its heartbeat by using the microscope. Aim In this Lab we will study the effect of different concentrations …

This experiment was developed primarily to find the optimal or preferred living conditions of adult brine shrimp. In this lab 3 variables were tested in different degrees to determine which the shrimp prefer. The different variables were light, ph, and temperature. From outside resources I have found that brine shrimp …

Active and passive transport are the ways in which cells allow things to move into and out of the cell through the cell membrane. They include many different ways to transport things. Passive transport requires no expenditure of energy by the cell. However, Active transport requires ATPs which have energy …

My experiment was to find out the effect of changing the copper sulphate concentration on the rate of the hydrolysis of starch to maltose using the enzyme amylase. Copper sulphate was used because it acted as an inhibitor. Hypothesis, I predicted that the more copper sulphate added to the solution …