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I am a Science and Chemistry teacher focused on Cambridge IGCSE and AS/A. I am also heavily involved in the National Chemistry Olympiad program. By way of background I have a PhD in inorganic chemistry and entered teaching after 13 years in the food industry. I guess I am a bit old fashioned - I don't use twitter and I have no idea what instagram or Pinterest are......but I love my subject and I love working with students.

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I am a Science and Chemistry teacher focused on Cambridge IGCSE and AS/A. I am also heavily involved in the National Chemistry Olympiad program. By way of background I have a PhD in inorganic chemistry and entered teaching after 13 years in the food industry. I guess I am a bit old fashioned - I don't use twitter and I have no idea what instagram or Pinterest are......but I love my subject and I love working with students.
Organic Chemistry: Alkane and Alkenes- draw and/or name (5 pages) for AS and IB students
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Organic Chemistry: Alkane and Alkenes- draw and/or name (5 pages) for AS and IB students

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This resources contains 5 pages of problems (2 double-sided wrk sheets) that include * Alkanes: name and / or draw isomers * Alkenes: naming and/or draw isomers, organic transformations and geometric isomer problems. In the latter case students are asked to work out how many isomers are possible for a compound with multiple double bonds). This worksheets will suit students studying for AS or IB organic chemistry. they can be sued as 2 sided w/s or as separate w/s as starters. Answers are provided.
Chemistry: Buffer calculations and interpretation of titration curves (A2 and IB students)
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Chemistry: Buffer calculations and interpretation of titration curves (A2 and IB students)

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This resource consists of 9 pages of notes and calculation examples and a three 2-page worksheets to help the teacher or student grapple with buffer calculations. The target is A2 and IB students. The wk/s 4 and 5 (and answers) are essentially a titration on paper where a specific weak acid (or base) is gradually titrated (each problem a new calculation) to show the student the effect the addition of OH ions has on the final pH. Itis a chance to repeat the same calculation multiple times. The format ensures students get to practice on the same system and therefore minimise cognitive overload. Students are encouraged to think about what species are in solution and what part of the titration curve each calculation relates to. I also encourage a novel way of setting out the calculations, which I (and my students) believe minimises potential mistakes.
Calculations - titrations, back titrations, empirical formulae and waters of crystallisation
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Calculations - titrations, back titrations, empirical formulae and waters of crystallisation

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This resource consists of 4 worksheets (13 pages of problems in total). The problems require students to write balanced equations (some are redox) and use calculations to solve the problem. The problems would suit AS and A2 students or those wanting to compete in National Chemistry Olympiad competitions. (18 Jan2018 post script: an additional 2 w/s have been added that focus only on waters of crystallisation).
Chemistry: practical - rates of reaction - iodine clock
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Chemistry: practical - rates of reaction - iodine clock

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This practical gets students to measure the rate of reaction when a thiosulfate solution is mixed with hydrogen peroxide. The resource includes a brief background to the experiment, a sheet to record data and some instructions for the Technician to help make up the solutions. This resource can be used for younger students to improve their experimental technique and interpretation and graphing skills (leave out the chemical equations) or for A2 Cambridge, Honors or AP students who wish to measure more detailed reaction kinetics. Some errors were found and have since been addressed (2016) Key words: kinetics, reaction rate, collision theory, iodine clock reaction, experiment
Chemistry: pH calculations of strong acids and bases
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Chemistry: pH calculations of strong acids and bases

(5)
This resource consists of 2 worksheets: 25 calculation problems (and worked answers) involving aspects of acid base chemistry and some general pH calculation notes, which initially cover simple calculations. . The first half of each work sheet covers pH calculations in both acid and base conditions and calculation of H+ and OH- ion concentrations. The 2nd side of the worksheets focus on pH calculations involving partial neutralisation reactions where the student has to work out what species is in excess before calculating the pH. Some problems also involve the use of n=m/M equation. These problems would suit students doing IGCSE, year 11 chemistry or wanting to enter the National chemistry Olympiad competition. ps (June 2018) I have updated this resource and changed a problem that potentially is misleading.)
Chemistry: balancing equations involving metals and their salts
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Chemistry: balancing equations involving metals and their salts

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This resource will be useful for teachers new to the profession or those with limited experience teaching chemistry. It contains * notes for the teacher including a 4-6 period lesson plan and template for practicals (5 pages in total); * a simple power point presentation with 13 slides that gives step by step instructions on how to balance equations. Reactions are limited to group 1 and 2 metals and their associated oxides, hydroxides and carbonates; * 4 worksheets (and answers) for word, symbol, and also word and symbol problems. The worksheets (and answers) can be found as separate resources if notes and lesson plans are not required.
Science words and activities for Chinese students learning English as a second language (14-18 yrs)
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Science words and activities for Chinese students learning English as a second language (14-18 yrs)

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Thank you to all those who have bought this resource. Please leave feedback as it helps me better align the material to student needs. This resource bundle (85) combines material from multiple resources focused on Science for Chinese students learning English as a second language. The purpose of the bundle is to provide material for teachers who have native Chinese speakers in their class. The students are regularly put into other subjects (eg Science) as part of the experience yet often with limited material that targets both language and content knowledge. This material has been trialed on 20 students over 12 months and refined over the year. This bundle includes material in biology, physics, chemistry and astronomy. Specifically, * A list of translated general science question phrases typically asked in worksheets and exams * A list of useful describing words when filling out worksheets and exams * Chemistry: translated list of words (fill in Chinese or English versions), works sheets covering periodic tale, electron configuration, acid/base, PT trends, fun worders, cross word puzzles, cloze-style activities, short answer questions, True/False activities, 15-20 minute tests, PT, who am I activities and a metal-non metal practical activity. * Biology: translated list of words (fill in Chinese or English versions), anatomy diagrams for labeling, plants/flower diagrams for labeling, short answer questions, ecology x-wrds, poster activity, classification activity. * Physics: translated list of words (fill in Chinese or English versions), light and sound x-word, graph w/s, calculation w/s, forces w/s, pressure w/s and power w/s, mechanics w/s * Astronomy: translated list of words (fill in Chinese or English versions), short answer questions, word finder. Admittedly, there is slightly more chemistry resources than physics. The students told me that chemistry and biology (and the associated terms) were their biggest issue. Please leave me feedback to let me know what and how I can improve the bundle or tell me of material you are searching for.
Chemistry: balancing difficult REDOX equations
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Chemistry: balancing difficult REDOX equations

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This resource consists of some general REDOX notes and 1 work sheet with 6 hard-to-difficult REDOX reactions to balance. The difficulty is due to the fact the students must first convert word equations into symbols. One problem requires them to balance under alkaline conditions and the metal product is not immediately obvious. The problems introduce the students to uncommon reactions where the acid itself is converted to products other than hydrogen gas. This worksheet would be suitable for students doing A-level or wanting to take part in the National Chemistry Olympiad competition.
1H- NMR problems - Assignment of spectra and elucidation of unknowns for A2 students
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1H- NMR problems - Assignment of spectra and elucidation of unknowns for A2 students

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This resource would suit A2 students. It contains 4 pages of problems, which can either be printed on both sides and made into an 4-page booklet or used as two separate 2-page problem sheets. The problems focus on the assignment of signals to the different hydrogen environments in 2-5 carbon organic aliphatic molecules. Some problems ask the student to distinguish between isomers based on the number and type of signals. The start of the worksheet asks students to decide how many signals they can expect based on symmetry arguments. In all cases students are asked to justify their assignments. Other worksheets are currently being developed that will include aromatic systems and problems based on the combination of IR, Mass spec, 1H and 13C NMR spectra. If you find any mistakes please give me feedback and I will address and send you an updated version.
Chemistry: sparingly soluble solids, solubility product and the Common Ion Effect (16-18 yr old).
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Chemistry: sparingly soluble solids, solubility product and the Common Ion Effect (16-18 yr old).

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This resource consists of 2 worksheets and answers. It covers definitions, short answer questions and calculations (solubility products, solubility, common ion effect). These w/s would suit students doing Cambridge A2, IB and other higher order chemistry courses. (some typos were removed 12 May 2019). Please leave feedback about whether this material meets your needs or if you find any mistakes.
Chemistry:  Periodic table trends for AS/A2 and IB students
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Chemistry: Periodic table trends for AS/A2 and IB students

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This resource consists of 2 double-sided worksheets made up of short answer questions (and answers) relating to atomic structure; in particular, ionisation energy, atomic and ionic radii and electron affinity. The questions would suit students studying AS-A2 or IB chemistry and students wanting to compete in a National Chemistry Olympiad competition. The students are required to write structured answers rather than limited 2-3 word answers therefore encouraging writing skills and building their understanding of the periodic table. 5Feb17: small error found and fixed.
Electricity- calculations 1: Using and interpreting V=IR, P=IV and P=W/t
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Electricity- calculations 1: Using and interpreting V=IR, P=IV and P=W/t

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This resource consists of 2 worksheets and answers. Each takes about 40-60 minutes to complete so they are useful for finishing off a lesson or as homework. WS1 starts be getting students to practice rearranging equations and then to apply the equations to solve for one unknown.. The worksheets are suitable for students new to the use of and interpretation of the equations V=IR, P=IV and P=W/t. Some short answer questions are included in WS2. . Its asks students to compare different components in series and parallel circuits (eg. bulbs and degree of brightness). The questions are designed to get students thinking about why something is observed (cf just calculations). Key words: calculations, electricity, power, watt, volts, current, resistance, series, parallel, ohm, amps, energy With all the best intentions in the world, mistakes do get made. Please tell me if there is an error and I will correct it and organise to send you a corrected copy.
Biology: punnett square problems and interpretation of pedigree charts
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Biology: punnett square problems and interpretation of pedigree charts

(2)
This resource contains two double sided problem sheets (and answers). The first is a series of punnet square focused problems and the 2nd asks students to interpret and answer questions from two pedigree charts. Both also contain some short answer questions. It will suit students who have not studied Genetics before. Key words: homozygous, heterozygous, dominant, recessive, punnet squares, zygote, chromosomes, pedigree charts. Thank you to everyone that bought this resource. If you get a spare 2 minutes could you leave some feedback? It is the only way I will know whether it meets your needs or what I might need to do to develop it further. My students want me to make up some more similar-styled worksheets, which I will load in the near future.
Chemistry: practical - Vitamin C analysis
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Chemistry: practical - Vitamin C analysis

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This resource contains student instructions to determine the vitamin C content of a commercial vitamin C tablet (or a Technician's unknown sample). There is an introduction outlining the different REDOX steps involved in the back titration, a data recording sheet and instructions for the Technician for the preparation of the different reagents. This practical would suit students who are studying REDOX chemistry in AS-A2 Cambridge or A-level courses.
Chemistry: Electrochemistry - REDOX and electrolysis material for AS-A2 students
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Chemistry: Electrochemistry - REDOX and electrolysis material for AS-A2 students

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This resource pack consists of material that will be covered in the AS and A2 program. It includes + Power point (53 slides) covering: oxidation number and balancing REDOX equations revision, REDOX calculations, batteries, Nernst equation and electrolysis. + Summarised CIE learning objectives + Student notes - REDOX (8 pages) that summarise the slides + Student notes – balancing REDOX equations + 7 -11 work sheets depending on whether double sided or a booklet (19 pages of problems) and answers. + Practicals (4) Buying this bundle will mean buying material used over two years so hopefully it is save you time and be viewed as value for money. Please note, some of these resources are already available on TES but as smaller bundles. 17 Aug 16: A recent typo was found on the electrolysis w/s and it has been updated (Q4, IV).
Science: Ice cream topic -designing, making and tasting ice cream (12-15 year old)
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Science: Ice cream topic -designing, making and tasting ice cream (12-15 year old)

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This is the perfect topic to end the year on. It is fun and the students don't even realise there is a serious aspect to it: healthy eating, analysing food etc. You can adjust the depth and type of learning outcomes depending on the age group (eg. if it is an older group I always include a section on microbiology and we swab surfaces and check for cleanliness, learn about how factories manage food safety etc). This topic encourages student-led learning and there is considerable enthusiasm in the classroom. You do not need to have an ice cream machine, although I did and there is often someone in the class who does have one). I have written up a rough guide on how the 1-2 weeks would go but I found that the students really enjoyed their own research and in some years this took longer than I originally had planned for. This resource includes: notes for teacher, a base ice cream recipe, ice cream in a bag activity, taste testing template, energy calculation activity and some other ideas (eg poster design). It is a lot of fun and will save you that painful end of year "now what do we do"?
Chemistry: Assignment of 13C-NMR spectra to structural isomers
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Chemistry: Assignment of 13C-NMR spectra to structural isomers

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This resource consists of 5 pages worth of problems containing spectra for 14 compounds. Typically, a molecular formula is given along with 3-4 spectra and the student is then expected to reason using the number of peaks and the signal position which spectra belongs with which structural isomer. This resource would suit students doing A2 or other advanced Chemistry courses. All attempts have been made to ensure the answers are correct. Please get in touch with me if you find an error and I will address it and send you an updated version.
States of matter worksheets; Elements/compounds/molecules and mixtures- 4 activities
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States of matter worksheets; Elements/compounds/molecules and mixtures- 4 activities

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This resource consists of 4 worksheets (some double sided) and answers. * The first two are starter activities and take about 10-15 minutes to complete. * The elements-compounds-molecules and mixtures worksheet has a variety of exercises. * The states of matter worksheet largely focuses on a number of short answer questions based on every day scenarios. There are also some diagrams to complete. The resources target students who are in year 8-10 (13-15 years old) depending on curriculum.