Over a period of time, the many definitions in this field have undergone several changes due to the development of new theories, and discovery of new chemical substances and phenomena. Please drop me a comment if I missed out any particular important definitions. Mobile: +92 323 509 4443 Email: admin@megalecture.com. Is ocr for the a level sciences harder than AQA? The papers are different if you sit an AS or the full A level. A number representing the relative overall energy of each orbital, which increases with distance from the nucleus. green chemistry - branch of chemistry concerned with lessening the environmental effect of chemicals, including development of new materials and processes. § Common ion effect - the reduction in the solubility of a I picked these definitions from mark schemes here and there, they may not be exact as AQA does give a bit of flexibility, but they should be correct. Level 2. ionic compound is formed from its gaseous ions under standard, change when 1 mole of gaseous atom is formed from its element, is added to one mole of atoms or ions in the gaseous state under, electrons from 1 mole of gaseous atoms of an element to form 1 Any reaction … … at one electrode and oxygen gains electrons at the other The physical or chemical proces… Alkali metals: Group 1 elements. when an electric current passes through an electrolyte Chemistry AS level definitions. Sub-level: the set of orbitals with the same energy within a main energy level. dissolved salt achieved by adding a solution of a compound In the scope of its subject, chemistry occupies an intermediate position between physics and biology. We use the unit of Kelvins for these readings. Mr Sean Chua, recommended H2 Chemistry Tutor with 19 Yrs Teaching Experience and Ten Years Series (TYS) Book Author shares in his JC1 A-Level H2 Chemistry Tuition Class on the different definitions of standard enthalpy changes, namely: Standard Enthalpy Change of Formation, Standard Enthalpy Change of Combustion, Standard Enthalpy Change of Neutralisation, Standard Enthalpy … 22. Welcome to the A level Chemistry website. Redox reaction. Marking a scale on a measuring instrument. Reduction. lOMoARcPSD|3871062 Defn list - Definition list for CIE A-Level Chemistry 9701 General Created by mclellann. Match. Oxidation & Reduction . The definition of the term substance is an example of how chemistry has a specific definition for a word that is used in everyday language with a different, vaguer definition. Students of all study levels use our site to find solutions and help for their problems, questions and projects. § ∆Sθtotal = Sθsystem + Sθsurroundings, Defn list - Definition list for CIE A-Level Chemistry 9701, Copyright © 2021 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, Share your documents to get free Premium access, Upgrade to Premium to read the full document, Definition list for CIE A-Level Chemistry 9701, Tutorial Chapter 2 & 3 - Practical for revision for final exam, Gun past Year try - Just a homework that i completed, Lecture notes - Marketing plan - Marketing. Absolute zero Accepted value Accuracy Acid Acid dissociation constant Acidic solution Activation energy Activity series Actual yield Aliphatic hydrocarbons Alkali earth metals Alkali metals Alkaline earth metals Alkenes Alma-seltzer Alkenes Alkynes Allotrope Alloys Alpha particle Amorphous solid Amphoteric Amplitude Anion … • absolute zero: This is the lowest temperature possible.If you remember that temperature is a measurement of how much atoms move around in a solid, Chemistry Key Terms and Definitions. A-level Chemistry Mechanism Summary Just before my A level exams last year I created a summary with all the chemistry equations and mechanisms that’s needed for the OCR specification. Chemistry (A-Level Revision) Chemical Equilibrium; Dynamic Equilibrium; Title . OR The relative atomic mass (A r) of an element is defined as the mass of one mole of Learn vocabulary, terms, and more with flashcards, games, and other study tools. § Faraday's 2nd Law of Electrolysis - the number of faradays Basic Chemistry Vocabulary List • absolute temperature: This is a temperature reading made relative to absolute zero. Test. metal/metal ion system and another system Standard enthalphy change of atomisation, change when 1 mole of gaseous atom is formed from its element, is added to one mole of atoms or ions in the gaseous state under, electrons from 1 mole of gaseous atoms of an element to form 1, the ability of a cation to attract electrons and, when 1 mole of an ionic solid dissolves in sufficient water to form, when 1 mole of a specified gaseous ion dissolves in sufficient, decomposition of a compound into its elements, when an electric current passes through an electrolyte. Created by mclellann. Please note that the A level website is still very much under construction and new material is being added on a daily basis. absorbance absorption 1. electrolyte OCR (A) A-level Chemistry Definitions (no rating) 0 customer reviews. Choose your specification below: * AQA Specification * OCR Specification A * Edexcel Specification * OCR Specification B * WJEC Specification * CIE Specification. This means the products can react to make the products.. A chemical equation showing this is of the form: NH 4 Cl NH 3 + HCl. § Polarising power - the ability of a cation to attract electrons and So, learn all of these words and phrases of by heart. Our collection of chemistry terms and definitions cover all areas, including: general chemistry science, organic chemistry, inorganic, biological, physical, environmental and analytical chemistry. [!!][!! Created by. Study Flashcards On OCR Chemistry A Level Key definitions Module 1 at Cram.com. This site contains notes, exercises, exam questions and tests to cover the new AQA A-level Chemistry course. New AQA A-LEVEL CHEMISTRY. Our AS and A-level Chemistry specifications will help you to inspire students, nurture their passion for the subject and lay the foundations for further study and the workplace. Here are is all the jargon you need to know in order to understand Chemistry at . These are the full set of keywords and definitions for AQA A-level Chemistry. § pH + pOH = 14 [solute in solvent A] Each shell has a different energy level, increasing the further it is from the nucleus. § Buffer solution - solution which resists changes in pH when Written up definitions for all the topics covered in OCR Chemistry A F321 for anyone doing some revision (I was doing this as part of my own revision, hel a substance made up of more than 1 type of atom - chemically bonded. Find Resources for A-Level Chemistry Revision + Edexcel, AQA & OCR specific Chemistry Revision Resources for A-Level Students. The Design and Delivery Advisory Group is in the process of developing proposals on … Copyright © 2021. Our specifications allow you to choose the context and applications to bring chemistry to … Study Flashcards On GCE O Level Chemistry Definitions at Cram.com. atomic (proton) number. isotopes. single charged ions Nucleus – In chemistry, the charged center of an atom; contains the atoms protons and neutrons. CIE A Level Chemistry 9701. § Generally, pX = -log X Resources include A-Level Chemistry Revision Notes, A-Level Chemistry Help Forums (General Revision + Edexcel, AQA, OCR & WJEC), Exam Specs, Exam Papers, Chemistry Revision Guides (A Level) & More. distort the electron cloud of an anion § Precipitation when Ksp < [My+(aq)]x[Xx-(aq)]y water to form a very dilute solution, § Electrolysis - decomposition of a compound into its elements Flashcards. Orbital, in chemistry and physics, a mathematical expression, called a wave function, that describes properties characteristic of no more than two electrons in the vicinity of an atomic nucleus or of a system of nuclei as in a molecule. A-level Chemistry Definitions. GCSE. § 1 Faraday (F) - the quantity of electric charge carried by 1 mole of Definitions form a major part of the A.S and help can be found here. There are the equivalent of three double bonds within the ring, their electrons delocalised around the ring. Why not try to learn the definitions? In this section, we have included those basic terms that are relevant to modern Chemistry. Gravity. The Best Chemistry AS and A Level Notes, Revision Guides, Tips and Websites compiled from all around the world at one place for your ease so you can prepare for your tests and examinations with the satisfaction that you have the best resources available to you. Technical terms explained! This is done by studying compounds which behave in a similar way because they have a particular atom, or group of atoms, (FUNCTIONAL GROUP) in their structure.CatenationThe ability to form bonds … Many reactions are reversible. Quickly memorize the terms, phrases and much more. 23. when 1 mole of an ionic solid dissolves in sufficient water to form List of Chemical Reactions - Get the complete list of all the important chemical reactions like Electrolysis, Rusting of Iron along with their representation and balanced chemical equations. Glossary of Chemistry Terms and Definitions. absolute zero A theoretical condition concerning a system at the lowest limit of the thermodynamic temperature scale, or zero kelvins, at which the system does not emit or absorb energy (i.e. First class revision resources, prepared exclusively by educational experts, for Junior Cert, Leaving Cert, GSCE and A-Level § In weak acid, Ka = Dynamic Equilibrium . Please sign in or register to post comments. Is ocr for the a level sciences harder than AQA? required to discharge one mole of an ion at an electrode equals The larger […] The General Certificate of Education (GCE) Advanced Level, or A Level, is a main school leaving qualification in England, Wales, Northern Ireland, the Channel Islands and the Isle of Man.It is available as an alternative qualification in other countries. Level 1. § Weak acid/base - weak electrolytes that dissociate partially in The formatting will be a bit dodgy, since I've C&P'ed from an MS Word doc, but I can't be bothered to fix it here. Shells and Subshells . colour over a specific pH range § For not saturated (can dissolve), Ksp > [My+(aq)]x[Xx-(aq)]y PLAY. Sections also exist to cover the legacy AQA and OCR A Chemistry Specifications Other study tools in the highest main energy level - an energy level, the. Of Kelvins for these readings or the full a level Chemistry definitions ( no rating 0! 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