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33. Investigate a weak acid-strong base titration (determine the Ka of a weak acid). It scored 20/24 (which, according to the boundaries of the M20 session, was a 7). The CSD is used in almost every chemistry department worldwide by universities and pharmaceutical companies. Example IB Chemistry IA. Investigate the factors affecting the colours of transition metal compounds (through the use of a colorimter). Fragmentation is a type of chemical dissociation, in which the removal of the electron from the molecule results in ionization. Like many IB students, you may be finding it challenging to think of an idea that a) you are really interested in and b) is feasible for you to complete given the time and resources available. It does not consider the identity of the atoms or groups attached to the central atom however, and this does have an effect. Using photometry to determine whether charge on the metal ion catalyst influences the rate of reaction between luminol and hydrogen peroxide. Ive grouped them together according to the main experimental technique or measurement method. As long as you twist it in a way, present it in a way to get the correct impression from your teacher and the examiners. Scribd is the world's largest social reading and publishing site. Investigating the effect of fermentation time and temperature on the pH of kimchi using acid-base titration. Similarly, you could look at how the length of a specific type of bond changes across different molecules. More. Investigating contents of EDTA in shower contents. 14. Below I will attach a PDF of my Chemistry IA (submitted for Chemistry HL). IAs involving databases Chemistry IA topics on electrochemistry (voltaic cells, voltammetry, electrolysis) IAs involving gas chromatography IAs involving mass measurements Chemistry IAs involving microscale chemistry IAs involving molecular modelling IA topics using photoconductivity (measuring light intensity) You could investigate how different factors affect the percentage yield of soap produced. For example, how and why does the enthalpy of combustion change as the length of the carbon chain increases in a homologous series? Calculate the Kw for water at different temperatures by measuring its pH. You could use polarimetry to investigate the kinetics of a reaction in which the reactants/ products are optically active, for example, the catalysed. help/tips would be greatly helpful! What I then did was to spend about an hour rewriting my article to addressspecifically all the IB assessment criteria without adding or changing any of the actual chemistry. You could increase the concentration of the reactants for a reaction and observe the effect on the rate in order to deduce the overall rate expression and the rate constant for the reaction. Which factors affect the rate of electrolysis in electroplating metals? Using calorimetry to determine whether alcohols with more branching have higher heats of combustion, Comparing the enthalpies of combustion of ethanol, ethanal and ethanoic acid using calorimetry to quantify intermolecular force strength, Using calorimetry to find out which type of nut butter contains most calories, Using calorimetry to investigate how food calories are affected by cooking in unsaturated and saturated vegetable oils. Paste as plain text instead, []. 'Utilization' - Relationships between topics, Relating Topics 4 & 14 to all the other topics, 3 & 13. Investigate a factor influencing retention in paper chromatography of amino acids. How is the fluorescence wavelength of fluorophores present in tumeric affected by solvent polarity measured by spectroscopy? 45. Investigating the bleaching of various food colourings to determine the rate constant. To probe whether water acidity affects the calcium ion concentration measured using EDTA complexometric titration. In 2010 Eugen Schwarz wrote a paper claiming that theoretical quantum mechanical calculations lead to the conclusion that the 3d level is lower in energy than the 4s level in transition elements. Onmy page on History of Internal Assessment I have detailed how the IA assessment has changed over the years. For example, changing the temperature of the titration reaction, or heating to a higher heat or for a longer period of time in the thermal decomposition reaction. Investigate factors determining heat of combustion in alcohols. For information on the Recruitment Incentive please reference the Additional Information section of . 34. Packed with tips and hints to help you avoid common errors, the guide will help keep your IA planning and execution on track. The data collection effort started in 2014 with a trial system of aluminum, magnesium, and silicon (and their binaries and ternary system data). Over 50% of my students achieved a 6 or 7 in their IA component. Using the half-life method and colorimetry to determine the activation energy for aspirin hydrolysis at different pH values, Determining the pKa value for ibuprofen from pH curves using the half-equivalence method. IB Chemistry IA Topics That ROCK | 50+ Ideas for SL and HL. Before the pandemic it is significant that the May 2019 subject report stated only a small proportion of the IAs submitted were based on secondary data from databases - the overwhelming majority were based upon hands-on experimentation. You could investigate which factors or methods increase the yield of the experiment, for example temperature or method of heating, as one of your IB Chemistry IA ideas. A student's Research Question, or RQ, is the starting point for their IA. If you have an account, sign in now to post with your account. Now many students are having to cope with an investigation based on secondary data. Thank you, Hi, thanks for this nice article! I have found a few databases, and I've already read the exemplars posted on the IB site (there were only 2, I wish there were more). Determine the enthalpy change of the thermal decomposition of sodium hydrogen carbonate. Gaining full marks for a databased IA 2014 DP Chemistry (Last exam Nov 2024) Practical scheme of work & IA Internal Assessment Gaining full marks for a databased IA I've made this a free page so that any IB chemistry teacher can access it for educational purposes. Investigate variables affecting water absorption polymers. Investigate the enthalpy change of a redox reaction. An example showing how rate of reaction can be measured by change in mass can be found. Investgating the effects of voltage and bubble overpotential on the electrolysis of sodium chloride using microscale Hoffman voltammetry, Measuring the Gibbs energy change for different spontaneous electrochemical reactions, Is there a relationship between ionisation energy and Gibbs energy change for redox reaction between different reactive metals, determined using voltametry, Determing the equilibrium constant for the interconversion of cobalt(II) hexahydrate and tetrachlorocobaltate(II), Finding the Gibbs energy change for the esterification reaction between propanoic acid and ethanol using gas chromatography. I just don't understand how I can use a database that is already focused on investigatingsomething and then use it to investigate something else???? This work can be on primary or secondary data but well analyzed and critically evaluated. It is mostly about how you treat your topic and how you present it. 13. Several tips I would recommend: Find a personal topic which is of interest to you to introduce what stimulated your inclination to this . *LINK TO MY BIOLOGY IA* Download. Investigate the factors affecting the rate of reaction between iodine and propanone. 20. For more information, please see our The page has two very different functions. Email : ibeliteacademy@gmail.com Skype : www.ibeliteacademy.com +91-9990664500 , +91-9990664300 Register As TutorRegister As Student Search Menu Online IB Chemistry Tutors IB Chemistry Tutor You could investigate how factors such as the length of fermentation affects the pH of the substance. 36. The chemistry IA examples have been marked, following the IB chemistry IA criteria, by official IB chemistry IA examiners. Investigate the speed of neutralisation of antacids from different sources. SCH 4UW. Positions under this announcement are being filled using a D irect Hire Authority (DHA) and Recruitment Incentive is authorized for eligible, highly-qualified applicants. Databases - Chemistry - Research Guides at University of Michigan Library Selected Databases Database Search Search for a database accessible by U-M faculty, students and staff Canvas module on Navigating Science Databases (use tag hsstem) Why use Library Databases? The impact of temperature on vitamin C in fruit juice. Acid-base titrations can also be used to assess the acidity of fermented foods and drinks such as sauerkraut and kombucha. What I realised after I had written it up for publication in Foundations of Chemistry was that effectively I had completed an individual scientific investigation using secondary data. Determining the optimal solvent and temperature to give highest yield for the synthesis of Dulcin from Tylenol, using titration, Determining the pKb of a base from its half-equivalence point. No mention of safety, ethical, environmental, Whole premise of IA relies on atomic spectra which are not included - fundamental flaw in the execution of this report. Compunnel Inc. Clinton, IA4 weeks agoBe among the first 25 applicantsSee who Compunnel Inc. has hired for this roleNo longer accepting applications. How does voltage and electrolyte concentration affect the oxide layer thickness during the anodisation of aluminium? Investigate the energy densities of fuels versus the bond strength (using a database). How is the rate of SN2 reactions affected by the carbon-halogen bond strength? For your privacy and protection, when applying to a job online, never give your social security number to a prospective employer, provide credit card or bank account information, or perform any sort of monetary transaction. Help us improve CareerBuilder by providing feedback about this job: Report this job Job ID: 7BD72A3F29FCA7C0B191AF52B99. ChemistryViews is the online science news magazine of Chemistry Europe. A free chemical structure database providing fast access to over 25 million structures, properties and associated information. ChemSpider is a free chemical structure database providing fast text and structure search access to over 67 million structures from hundreds of data sources. There are certain essential criteria that an RQ must meet to guarantee a well-performing IA. The iodine concentration of iodinated salt can be calculated in a redox titration by titrating the iodine with sodium thiosulphate solution to reduce it to iodide ions, as can be seen. If you have an account, sign in now to post with your account. It also shows that the IB assessment criteria bear little relationship to the criteria used to judge the worth of a peer-reviewed report for publication in an internationally recognised academic chemistry journal. Databases in IB Bio Ptable is an interactive table of elements that allows users to alter temperature, see reactions, and find the electrons, isotopes and compounds for all of the elements. A redox titration can be done to see how much potassium manganate(VII) solution is needed to titrate a solution of crushed up iron tablets, and therefore work out how much iron there is in the tablets. 2014 DP Chemistry (Last exam Nov 2024) Practical scheme of work & IA. For example, how does the bond enthalpy for the C-H bond vary as the length of the alkane increases? Periodicity & transition metals (1), 3 & 13. Are there more waters of crystallisation in cheap washing soda? If you find you are in need of a bit more advice on how to successfully complete your Chemistry Internal Assessment, then be sure to check out our student guide for comprehensive guidance on how to plan, execute, and write-up a Chemistry IA that will earn solid marks. Virtual Labs Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations and more. Here are some more of our posts you might find useful: We have a team of awesome tutors ready to help you ace the IB. You can see the results of my investigation on a separate page on this website. About us ACS Chemworx - Free research collaboration tool. 44. DOC home page . Database Systems: Design Implementation and Management (Carlos Coronel; Steven Morris) Financial Accounting: an Integrated Approach (Ken Trotman; Michael Gibbins) . In contrast, dyes are either liquids or soluble, but can be converted to pigments by precipitation with a metallic salt. My chemistry teacher hasn't really explained how to do our IA and I'm running out of time. A polarimeter is a device that measures the rotation of polarised light as it passes through an optically active fluid. You can compare different brands of indigestion tablet that contain different active ingredients. 18. IA Biology HL 7. What is the pKa value for natural indicators obtained from peonies, poppies and red cabbage, determined using colorimetry? The IB should make IAs a part of only HL subjects. Does water temperature or pH most affect oxygen levels in lakes as measured using the Winkler method? How does the ethanol concentration vary for different wines when measured using back-titration with dichromate and ferrous ammonium sulfate? Here are two examples of database labs in chemistry. Investigate the esterification of soaps. Investigate the energy densities of fuels versus the bond strength (using a database). Do expensive iron tablets contain more iron than cheaper vitamin tablets? This is a project that accounts for 20% of your final grade. Investigate the level of unsaturation in different oil brands. Investigate how the hardness of water affects the solubility of salts. Maybe it is time for the chemistry practical assessment to be decoupled from the other two sciences to reflect more accurately what real chemists do. I might just be wrong about how I'm actually supposed to use a database. I was able to find extensive info on Wikipedia, but I doubt .
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