Science Essays

Macromolecules are huge highly organized molecules. These molecules carry out the activities of the cell. There are four major categories in which these molecules can be placed into. These groups include carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates are organic molecules that are usually used to store chemical energy and …

* Separation techniques of analysis (PC / TLC / GLC / Electrophoresis) * Mass Spectroscopy * Atomic emission spectroscopy * UV / Visible absorption spectroscopy * Combined spectral techniques (NMR / IR / Mass Spectra) By U6F Jacky Huang 2008/03 OR A. Introduction to chromatography All chromatography have the following …

I am given an investigation which I have to plan myself; it is about an unknown organic compound that is either an alcohol, aldehyde, ketone, carboxylic acid, ester or phenol. I have to suggest a series of simple chemical tests, which could be done in test tubes, to distinguish the …

Aim To design an experiment to measure a volume of gas that will show which of the two equations given is more likely to be the correct volume. Experiment Equations (s) Equation 1: 2 KNO3 (s) 2 KNO2 (s) + O2 (g) Equation 2: 2 KNO3 (s) K2O (s) + …

As the title suggests I am going to investigate the effect of various factors in egg white. And as all of us know that egg meals are rich in proteins and that why we feed them to small children. But not all the parts of the egg have the same …

Materials used: * Beaker * Conical Flask * Measuring Cylinder of 15 cc * Burette * Indicator * Clamp Stand * Pipette * Beam Balance * HNO3 of 2M concentration * NaOH of 2M concentration Procedure : * Crush the sample of marble in to small pieces, and take 1 …

University College London Hospital (UCLH) is a teaching hospital in London, part of the University College London Hospital NHS Foundation Trust. It was founded in 1834, eight years after UCL (then known as the University College London as the North London Hospital in order to provide clinical training for the …

“The moment of a (turning) force about a given pivot is defined as follows. Moment of a force = force x perpendicular distance from the pivot to the line of action of the force. The unit of moment is the Newton metre (Nm).”1 Also, “The principle of moments states that …

During radioactive decay, atoms of one element are changed into atoms of another element through the emission of alpha or beta particles from their unstable nuclei. With alpha decay the nucleus emits an alpha particle, which is essentially a helium nucleus; a group of two protons and two neutrons. It …

Objective: To determine the x in the formula Fe (NH4)2(SO4)2�xH2O by titration against a standard solution of potassium manganate (VII) (permanganate). Theory: The experiment involves a redox reaction between potassium manganate (VII) and ammonium Potassium manganate (VII) is used in the experiment as it reacts completely and it is its …