In such cases, the element of personal analysis and evaluation is extremely important. Where a topic might be approached from different viewpoints, the treatment of the material must be approached from a chemistry perspective. Title The ratio of the gases evolved at the positive electrode during the electrolysis of common salt solution Research question Is there a relationship between the concentration of aqueous sodium chloride solution and the ratio of the amounts of oxygen and chlorine gas that are evolved at the positive electrode during electrolysis.
The magnitude of uncertainties in physical data should be evaluated and discussed. A good argument in chemistry will almost certainly include consideration and comparison of different approaches and methods directly relevant to the research question.
In such cases, only the essential non-chemistry information should be provided in the introduction, as the essay will be marked on its chemical content. In any chemistry extended essay, students should be able to demonstrate that they understand the theory underlying any Chemistry electrolysis coursework essay work and state any assumptions made.
Moreover, it may help if the student further defines and refines the topic chosen for study in the form of a research question or statement. If it is necessary to include more non-chemistry for example, geological information, then the appropriate place for it is the appendix.
All essays must be supervised by a school supervisor. The remainder can be displayed in tabular or graphical form.
Treatment of the topic An extended essay in chemistry may be based on literature, theoretical models or experimental data. Where possible, the quality of sources accessed or data generated should be verified by secondary sources or by direct calculations.
If the practical work is carried out in an industrial or university laboratory, the essay should be accompanied by a letter from the external supervisor outlining the nature of the supervision and the level of guidance provided.
For the essay to make sense, it would be important to state the ages of the rocks and give some geological background. However, in chemistry extended essays it is perfectly reasonable to formulate the research question as a statement or as a hypothesis rather than an actual question.
Interpreting the assessment criteria Criterion A: Chemistry is the science that deals with the composition, characterization and transformation of substances. For experimental work, sufficient information should be provided so that the work could be repeated if necessary by an independent worker.
All essays involving experimental work undertaken by the student should include a clear and concise description of the experimental work. Example essay titles The following examples of titles for chemistry extended essays are intended as guidance only.
Such extended essays must be characterized by a particular chemical emphasis within a more general set of research criteria. Ways of demonstrating this in chemistry essays include the choice of topic and research question, and the use of novel or innovative approaches to address the research question.
Approximations in models should be accounted for and all assumptions examined thoroughly.Extended essay in chemistry. The following is an overview of the extended essay guidelines for chemistry (IBO documents) An extended essay in chemistry provides students with an opportunity to investigate a particular aspect of the materials of our environment.
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Disclaimer: This essay has been submitted by a student. This is not an example of the work written by our professional essay writers. This is not an example of the work written by our professional essay writers. Igcse Chemistry Electrolysis Questions And Answers I'm an IGCSE Chemistry-extended student, and my question is: in electrolysis, does it make any.
Hypothesis Electrolysis is the decomposition of a substance or compound with the use of electricity. Electricity is the free-flow of electrons (or charged particles). An electrical current is only able to pass through a substance if the electrons (or charged particles) are able to move.
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You Have Not Saved Any Essays. Topics in this paper. Cathode; To find the effect of time on copper deposition on the cathode during the electrolysis of copper sulphate solution. Introduction:. Chemistry Coursework Electrolysis of Sodium Chloride (NaCl) Aim: To 3/5(2).Download