Isotopes Past Papers

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For students planning to take part in the Chemistry Olympiad, trying out past papers gives them the opportunity to hone key skills and boost their confidence ahead of the competition. This collection brings together past papers from 2003 onwards, each accompanied by a summary of the topics covered as well as a mark scheme with answers.

Past papers can be used flexibly by teachers and students, with varying degrees of independence. Browse the summary of papers and topics below to find a particular question, or select a paper to work through from beginning to end.

Topics include reactions that produce phosphine; carbon capture by calcium looping; synthesis and reactions of levulinic acid; Newman projections; synthesis of hydroxychloroquine; and kinetics of the formation of xenon difluoride.

Topics include the reactions and structure of calcium carbide; the thermodynamics of hydrogen as a fuel; the structure of UV-absorbing chemicals; structures of silicon oxides; kinetics in colourful compounds; and synthesising [5]-ladderanoic acid.

Topics include carbon dioxide in fizzy drinks; electrolysis of precious metals and NMR spectra of platinum complexes; the kinetics of nerve agent treatments; synthesising pesticides; and calculations on biodegradable polymers.

Topics include reactions within lithium-ion batteries; sustainable methods of producing ammonia; isotopes and reactions of Uranium; the synthesis of dextromethorphan; and compounds of helium and sodium.

Topics include the reactions of lanthanum carbonate; ionisation energies of sodium; the synthesis of tazarotene; analysis of chemicals that bombardier beetles use to defend themselves; and the structure and reactions of methane hydrates.

Topics include synthesising Ambrox; analysing a copper complex using titrations; thermodynamics of halogen fluorides; calculations on salty solutions; using osmium compounds in organic reactions; and the structure of gold.

Topics include methods of producing pure silicon; the kinetics of vitamin D production in mushrooms; thermodynamics and structure of mercury fulminate; reactions and analysis of aluminium compounds; mass spectrometry of polypeptides; and the synthesis of fexofenadine.

Topics include the reactions and thermodynamics of rocket fuels; structures of phosphorus allotropes; analysing phosphate levels in blood; spectroscopic analysis of flame retardants; the synthesis of Tamiflu; and reactions of chlorine dioxide.

Topics include reactions of the ingredients in sherbet lemons; reactions in vehicle exhausts; structures of acyl chloride compounds; thermal decomposition of copper(II) sulfate; producing oxygen in emergencies; the synthesis of sildenafil; and mass spectrometry and NMR of haloalkanes.

Topics include the properties of carbon oxides; reactions of diiodine pentoxide; calculations with methanoic acid; NMR spectra of NanoPutians; estimating blood alcohol levels; and the synthesis of rimonabant.

Topics include redox reactions; reactions of pollutants that erode monuments; calculating dissolved oxygen in water; the structure of agent orange; the thermodynamics of white and grey tin; electronic transitions in hydrogen; and structures of sulfur-containing compounds.

Welcome to our collection of OCR A-Level Chemistry Past Papers. Our comprehensive collection of past papers is designed to help you prepare for your upcoming exams by giving you a better understanding of the exam format, types of questions asked, and the level of difficulty. Practice with our past papers to improve your exam-taking skills, identify areas of weakness, and gain confidence. You can easily access and download our collection of OCR A-Level Chemistry Past Papers on this page.

If you're ready and keen to get started click the button below to book your first 2 hour 1-1 tutoring lesson with us. Connect with a tutor from a university of your choice in minutes. (Use FAST5 to get 5% Off!)

Welcome to our page dedicated to providing AQA GCSE Physics Past Papers! We have gathered a collection of the latest and most relevant past papers from various sources, including the official AQA website and popular online platforms. These papers can help you to prepare for your exams by providing a realistic simulation of the actual exam, allowing you to identify your strengths and weaknesses, refine your exam technique, and gain confidence in your ability to succeed. Browse our collection and start practicing today!

Welcome to our BMAT Past Paper Bank with BMAT Past Paper Compilations for BMAT Section 1 and 2 along with detailed explanations and worked solutions. We also have BMAT Section 3 Essay Plans - your golden BMAT resource.

Hopefully by now you have understood the theory and we will apply it to BMAT Past Paper questions to see if you can show us that you have! If you are struggling, we will delve deeper and go into theory more.

Here we go through some more essays both good and bad and show you areas students go wrong but also give you key techniques to take away. This will be based on previous BMAT Past Papers and BMAT Past Essays.

Are you aiming for the best BMAT score possible? Well, if you are, we really recommend having some BMAT 1-to-1 lessons with our experts. Our BMAT lessons are all personal and specific to you; we break down your thinking process, and continuously improve and perfect your BMAT technique. On average, our 1-to-1 students score above 13.5A in the BMAT.

The BMAT stands for the Biomedical Admissions Test. It is an exam which is used for medical, dental and veterinary school in the UK and abroad. It is used by the following UK Medical Schools: Oxford, Cambridge, UCL, Imperial, Brighton & Sussex, Leeds and Lancaster.

In total, there are over 16 years of BMAT Past Papers as well as the specimen paper so that makes 17 BMAT Past Papers! That should give you lots of free BMAT preparation materials and free BMAT questions.

It's difficult to say as it varies year on year but we usually say you should aim for a score of above 5.7 in Section 1, 5.5 in Section 2 and 3A in Section 3. This tends to be above the threshold for most universities.

The BMAT Test has 3 sections. Section 1 is made up of problem solving and critical thinking (data analysis no longer tested from 2020). Section 2 contains questions based on GCSE Biology, Chemistry, Maths and Physics. BMAT Section 3 is a scientific essay you have to write on an A4 page.

You should aim to start preparing for BMAT at least 8 weeks beforehand. You should aim to do 2 to 3 hours a week for the first 3 weeks and then increase to 6 to 7 hours a week. This means if you are doing the BMAT in November, you should start in September and if you are doing the BMAT in September you should start in July.

The BMAT is very different to the UCAT but that doesn't mean it is harder. If you like essay writing, science or problem solving then BMAT is the exam for you. Otherwise, most people tend to find the UCAT easier.

You should revise for BMAT at least 2 to 3 times a week for up to 8 weeks to get the best possible preparation. It can be hard if you have school work too, but try and find some time to do some BMAT Past Papers, watch free BMAT videos on YouTube and kickstart your BMAT preparation.

For the BMAT, thankfully there are many free BMAT questions floating around! The free official BMAT past papers should be your main BMAT question resource. On this page we have free BMAT past paper explanations, which is helpful as the BMAT consortium sadly don't provide answer explanations. We've also compiled the free BMAT official questions by topic, so you can address each common S2 BMAT question type one by one.

Looking for revision notes that are specific to the exam board you are studying? If so, click the links below to view our condensed, easy-to-understand revision notes for each exam board, practice exam question booklets, mindmap visual aids, interactive quizzes, PowerPoint presentations and a library of past papers directly from the exam boards.

Mass spectrometry is a technique which is used to separate different isotopes of an element and to calculate their relative abundances. It works on the principle; that when charged particles move through electric and magnetic fields in a vacuum, they get separated on the basis of their mass-to-charge ratio.

Different isotopes of an element are present in different proportions in a naturally occurring sample of an element. Relative abundance means the percentage of a certain isotope of an element in a naturally occurring sample.

No. mass number is the sum of protons and neutrons present in the nucleus of an atom and it is a whole number value while relative atomic mass is the ratio of the mass of an element to the 1/12th of the mass of a carbon atom. RAM can be in decimal form.

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