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They’re written by teachers and tutors, who To measure the rate of a reaction, we need to be able to measure either how quickly the reactants are used up or how quickly the products are formed The method used for measuring depends on the substances involved; 6;lHi¼´ OH[PD;Z´/Hjlj OH[PD;Z´/Hjlj´M^i´6;lHi OH[PD;Z´lHjlj´M^i´s;lHi 0jP\N´D^C;ZlÎ Ï´DOZ^iPFH¼ ^C;ZlÎ Ï´DOZ^iPFH´lmi\j´ CZmH Author: Alexandra Brennan Expertise: Chemistry Alex studied Biochemistry at Newcastle University before embarking upon a career in teaching. 🤚 Asking For Advice/Help pls someone give the pdf of chemistry igcse notes from sme 2023 i have not subscribed and i finished using the 10 free pages of the month The best online community to share tips, ask for help and advice in Revision notes on Formulae for the Cambridge (CIE) IGCSE Chemistry syllabus, written by the Chemistry experts at Save My Exams. 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With nearly 10 years of teaching experience, Alex has had several roles Avogadro’s Law states that at the same conditions of temperature and pressure, equal amounts of gases occupy the same volume of space; At room temperature and pressure, the volume occupied by one mole of any gas was found to be 24 dm 3 or 24,000 cm 3 This is known as the molar gas volume at RTP RTP stands for “room temperature and pressure” and Author: Alexandra Brennan Expertise: Chemistry Alex studied Biochemistry at Newcastle University before embarking upon a career in teaching. -HrHijPCZH´-H;DlP^\j-HrHijPCZH´-H;DlP^\j-HrHijPCZH´iH;DlP^\j. Covalent compounds are formed when pairs of electrons are shared between atoms; Only non-metal elements participate in covalent bonding; As in ionic bonding, each atom gains a full outer shell of hm;lP^\j´M^i´ tli;DlP^\´^M´ i^\´Mi^[´ H[;lPlH /OH´ju[C^Z´Hhm;lP^\j´M^i´lOH´FPyHiH\l´jl;NHj´^M´lOH´Htli;DlP^\´^M´Pi^\´Mi^[´OH[;lPlH´;iH¼ Author: Lucy Kirkham Expertise: Head of STEM Lucy has been a passionate Maths teacher for over 12 years, teaching maths across the UK and abroad helping to engage, interest and develop confidence in the subject at all Revision notes on Interpreting Data for the Cambridge O Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. With nearly 10 years of teaching experience, Alex has had several roles including Chemistry/Science Teacher, Head of Science and Examiner for AQA and Edexcel. States of Matter ;[CiPFNH´"´ HrHZ´ OH[Pjliu º ´*i^fHilPHj´^M´ Hl;Zj ^\lH\lj *i^fHilPHj´^M´ Hl;Zj 8^mi´\^lHj Head to www. 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They are very hard and strong metals and are good conductors of heat and electricity; They have very high melting points and are highly dense metals; For example, the /OH´ \m[CHi´^M´f;ilPDZHj´fHi´m\Pl´r^Zm[H´ Ê´[^iH´f;ilPDZHj´P\´;´NPrH\´r^Zm[H´sPZZ´fi^FmDH´[^iH MiHhmH\l´jmDDHjjMmZ´D^ZZPjP^\j /OH´ Revision notes for the AQA AS Chemistry syllabus, Revision notes for the AQA AS Chemistry syllabus, written by the Chemistry experts at Save My Exams. Yield is the term used to describe the amount of product you get from a reaction; In practice, you never get 100% yield in a chemical process for several reasons These include: Some reactants may be left behind in the equipment The reaction may be reversible and in these reactions a high yield is never possible as the products are continually Title: 2. Alex’s passion for creating engaging content that enables Author: Alexandra Brennan Expertise: Chemistry Alex studied Biochemistry at Newcastle University before embarking upon a career in teaching. Elements, compounds and mixtures. Add dilute acid into a beaker and heat using a Bunsen burner flame. Elimination Reactions of Halogenoalkanes. AQA. com for more awesome resources Revision notes on Writing Equations for the Cambridge O Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. Revision notes, past papers and practice questions for Cambridge O Level Chemistry, written by our expert team of teachers and examiners. Glycogen, cellulose and starch Revision notes on Apparatus for Measurements for the Cambridge O Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. 1. Exam Questions; Revision Notes; Flashcards; Join the 100,000+ Students that ️ Save My Exams. For atoms or particles to react with each other in a chemical system they must first of all come into contact with each other in a collision; A number of factors come into play when analysing collisions such as energy, Author: Alexandra Brennan Expertise: Chemistry Alex studied Biochemistry at Newcastle University before embarking upon a career in teaching. ZHDli^ZujPj´^M´ hmH^mj´ ^ffHiÎ Ï´. Title: 6. Physical change. This type of formula tells you the composition of any member of a whole homologous series of organic compound; For example, all of the alkanes have the general formula C n H 2n+2, where n represents the number of Calculating Empirical Formula. You may be asked about experimental methods in exam questions and your experience and knowledge of practical techniques in chemistry should help you to spot mistakes and suggest My team and I have created an open-access website dedicated to O and N Level Chemistry: https://chemnotcheem. 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There are over 100 chemical elements which have been isolated and identified. the empirical formula of The symbol equations for the different stages of the extraction of iron from hematite are: Zone 1: The burning of carbon (coke) to provide heat and produce carbon dioxide:; C (s) + O 2 (g) → CO 2 (g). Show all subjects. 1 Elements, Compounds & Mixtures | Cambridge O Level Chemistry Revision Notes 2023 Created Date: 1/21/2025 2:25:58 PM All the course specific revision resources you need to ace your O Level Science exams. Alex’s passion for creating engaging content that enables Answer. Alex’s passion for creating engaging content that enables students to succeed in exams drove her to pursue a career outside of the classroom at SME. 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Amphoteric oxides are a curious group of oxides that can behave as both acidic and basic, depending on whether the other reactant is an acid or a base; In both cases, a salt and water are formed; Two A fuel is a substance which releases energy when burned; Hydrogen is used as a fuel in rocket engines and in fuel cells to power some cars; A fuel cell is an electrochemical cell in which a fuel donates electrons at one With nearly 10 years of teaching experience, Alex has had several roles including Chemistry/Science Teacher, Head of Science and Examiner for AQA and Edexcel. Home. Exam Questions; Revision Notes; Flashcards; Past Papers; OCR. Exam Questions; Revision Notes; Flashcards; Past Papers; Edexcel. Revision notes on Pressure & Temperature in Gases for the Cambridge O Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. 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Revision notes on Galvanising & Sacrificial Protection for the Cambridge O Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. uFi^NH\´ mHZ´ HZZj uFi^NH\´ mHZ´ HZZj ´MmHZ´Pj´;´jmCjl;\DH´sOPDO´iHZH;jHj´H\HiNu´sOH\´Cmi\HF uFi^NH\´Pj´mjHF´;j´;´MmHZ´P\´i^DYHl´H\NP\Hj´;\F´P\´MmHZ´DHZZj´l^´f^sHi´j^[H´D;ij The carboxylic acids behave like other acids; They react with: metals to form a salt and hydrogen; carbonates to form a salt, water and carbon dioxide gas; They also take part in neutralisation reactions to produce salt and water; Ethanoic acid (also called acetic acid) is the acid used to make vinegar, which contains around 5% by volume of ethanoic acid Learn everything you need to know for your A Level Chemistry exams - and nothing more. Log in; Alkanes are a group of saturated hydrocarbons; The term saturated means that they only have single carbon-carbon bonds, there are no double bonds; The general formula of the alkanes is C n H 2n+2; They are colourless Revision notes on Electrolysis of Molten Compounds for the Cambridge O Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. com for more awesome resources Carbohydrates. Chemistry A (Gateway) Exam Revision notes on Addition Reactions for the Cambridge O Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. Revision notes on Addition & Condensation Polymers for the Cambridge O Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. What is the formula of an alcohol that contains 5 carbon atoms? A compound has the formula C 12 H24. Revision notes on Ionic Half Equations for the Cambridge O Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. Atomic masses are therefore defined in terms of a standard atom which is called the unified atomic mass unit. ;[CiPFNH´"´ HrHZ´ OH[Pjliu º ´"tPFHj ^\lH\lj Z;jjPMuP\N´"tPFHj 8^mi´\^lHj Head to www. Alex’s passion for creating engaging content that enables jl;lH´;l´i^^[´lH[fHi;lmiH D;ZDPm[´jmZM;lH: P\j^ZmCZH j^ZPF [;N\HjPm[´DOZ^iPFH j^ZmCZH: j^ZPF ^s´F^Hj´lOH´jlmFH\l´^Cl;P\´[;N\HjPm[´DOZ^iPFH´Diujl;Zj´Mi^[´lOH´[PtlmiHÁ ZHDli^ZujPj´*iP\DPfZHj ZHDli^ZujPj¼´ H\Hi;Z´*iP\DPfZHj 6OH\´;\´HZHDliPD´DmiiH\l´Pj´f;jjHF´lOi^mNO´;´ [^ZlH\´P^\PD´D^[f^m\F ´lOH´D^[f^m\F´FHD^[f^jHj´^i Cambridge O Level Biology Revision. 100 mol/dm 3 = 1. com for more awesome resources Learn everything you need to know for your O Level Chemistry exams - and nothing more. In the case of halogenoalkanes, this small molecule is a hydrogen halide (eg. does anyone have save my exam notes!! i need them desperately for alevel biology,chemistry and physics. No subjects found. the (exam) results speak Diagram showing the preparation of soluble salts Method. save my exams chemistry notes . Revision notes on Locating Agents & Rf Values for the Cambridge O Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. The ions, atoms or molecules are arranged in a regular and repeating arrangement. the (exam) results speak Revision notes on 1. Revision notes for the Cambridge O Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. This unified atomic mass is defined as one-twelfth of the mass of a carbon-12 isotope. 1 Hazards & Risks for the Edexcel International A Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. When acids are added to water, they form positively charged hydrogen ions (H +) The presence of H + ions is what makes a solution acidic; When alkalis are added to water, they form negative hydroxide ions (OH –) Relative Masses Atomic Mass Unit. To which homologous series does this compound belong. Physical changes (such as melting or evaporating) do not produce any new chemical substances; These changes are often easy to reverse; Making a mixture from 2 or more substances or Author: Alexandra Brennan Expertise: Chemistry Alex studied Biochemistry at Newcastle University before embarking upon a career in teaching. The best online community to share tips, ask for help and advice in your IGCSE's and O Level exams! Notes Save My Exams Notes Notes by Alt Academy Notes by Sir Rashid Majeed Topical Revision Notes Book Notes by Sir Saad Hameed Notes by Sir Zahid Iqbal Revision Notes by SwH We have already seen that a reversible reaction is one that occurs in both directions; When during the course of reaction, the rate of the forward reaction equals the rate of the reverse reaction, then the overall reaction is Revision notes on Oxidation & Reduction for the Cambridge O Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. Chemistry A (Gateway) Exam /OH´liPDYu´lOP\N´sPlO´CmiHllHj´Pj´l^´iH[H[CHi´l^´iH;F´lOH´jD;ZH´Mi^[´l^f´l^´C^ll^[´;j´ º ´D[ ´Pj´;l´lOH l^f´^M´lOH´D^Zm[\ Aqueous solutions will always have water present (H 2 O); In the electrolysis of aqueous solutions, the water molecules dissociate producing H + and OH – ions:; H 2 O ⇌ H + + OH –. Classifying Oxides Oxides are compounds made from one or more atoms of oxygen combined with one other element Examples of oxides include: MgO, ZnO, K 2 O, CO 2 , SO 2 , H 2 O Alloys are mixtures of substances, they are not chemically combined and an alloy is not a compound. Cambridge O Level Chemistry Exam Questions Past paper and exam-style questions organised by topic, with student-friendly answers written by teachers and examiners. Rate of reaction = k [A] m [B] n [A] and [B] = Chemistry.
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