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Chemistry Essay Examples

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Clara Y Lim-Sylianco

Dr. Clara Lim-Sylianco is a Filipino scientist known on her works on mutagens, anti-mutagens, and Carcinogenic chemicals found in various fruits and vegetables. She also authored schoolbooks that are still makes use in schools nowadays. She received the Gregorio Y. Zara award in 1979; she also served as the UP Endowment Professorial Chair in chemistry…

Reaction of Butanols with Hydrobromic Acid

For this experiment our primary goal was to observe and note the reaction of butanols with hydrobromic acid. Before the lab began we discussed and proposed mechanisms. (see “Mechanisms”) To begin this experiment we calculated how much of each material we were going to be using, and the numbers we chose to use differed from…

The effect of temperature on the hydrolysis of starch using amylase extracted from barley

Enzymes are a class of proteins that catalyse chemical reactions, which increases the rate of a metabolic reaction. Most enzymes are specific, working on a particular or class of reactions. In this case I am using an enzyme known as amylase (a group of enzymes which convert starch to sugar), which is an important metabolic…

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Effect of concentration of copper sulphate on the action of amylase to break down starch

There are two ways that we could have consumed copper sulphate. Water pipes are responsible for transporting water, and some of them are made out of copper. Copper pipes can become rusted if there is high sulphate content in the water, basic copper sulphate is precipitated which can grow through the pipe wall creating pit…

How different concentration of enzyme catalase affects the rate of breaking down substrate hydrogen peroxide

Enzymes are large proteins that speed up chemical reaction. As globular protein, enzymes have a specific three-dimensional shape which is determined by their sequence of amino acids. Despite their large overall size, enzyme molecules only have a small region that is functional. This is known as enzyme’s active site. The substrate molecule is held within…

Chromatography and Solvents

Chromatography is a method of separating compounds and mixtures so that they can be identified and analyzed. The word chromatography means color writing. There are many kinds of chromatography such as the thin layer chromatography, Partition chromatography, Column chromatography, and Paper chromatography. Chromatography is important in the analysis of processes and materials such as environmental…

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