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.)

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.

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.

This worksheet has 2 pages of problems (and answers) which require a Lewis structure and a molecular shape. Some of the questions ask students to compare molecule bond angles and explain why they differ. A set of notes with examples is included. This resource would be useful for students enrolled in Honors or AP.

This resource consists of 4 work sheets and answers. It would suit students aged 14-16 learning to balance word and symbol equations. WS1 contains 20 word and symbol equations involving the reaction of metals with oxygen, chlorine, water or an acid. WS2 contains 20 word and symbol equations involving reactions between metal salts (carbonates, hydroxides and oxides) and acids WS3 requires the students to complete acid base word and symbol equations WS4 requires symbol equations for reactions with metals. Some of these resources appear elsewhere.

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

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.

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).

This resource contains 2 worksheets (4 pages) of waters of crystallisation problems (and answers). The exercises would be suitable for students wanting to do IGCSE or AS chemistry programs.

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).

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.

This resource contains 9 pages of detailed notes and worked examples as well as a 2-page worksheet that contains some straight forward pH calculations as well as some very challenging calculations due to the weak acid not being so weak. The detailed notes work though a variety of scenarios and some of the associated misconceptions. The notes would be useful for both new chemistry teachers and students. This resource would be suitable for A level students. It will also be useful for those interested in continuing in chemistry or entering the National Chemistry Olympiad competition. Key words: buffer, pH, calculation, acid, base

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.

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.

This resource contains some worked calculations and notes and a 2-page w/s that contains weak acid or weak base problems. 2 misconception questions are also included to encourage students to be able to explain a concept without the need of a calculator. Answers are provided. The detailed pH calculation notes are also found in the other pH calculation resources at Drog-chem’s shop. This resource would suit those doing AS/A2 (Cambridge) or A-level chemistry. It would be useful for those wanting to compete in the National Chemistry Olympiad Competition…

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.

This resource consists of notes and worked examples to show how to establish a molecule's Lewis structure and molecular shape. The problems are more difficult than ws1 and would suit students who are doing Honors, AP or are interested in competing in the National Chemistry Olympiad competition.

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.

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.

This resource consists of 6 pages of problems (questions, mechanism and 'complete the reaction scheme' questions) targeting the A2 Cambridge program. Answers are provided. The problems and answers have been checked but if there are any errors or questions, please get in touch with me and I will address them. If you would like a certain type of worksheet please contact me as I am working on other ones for my classes and I will reorder my efforts if I think it can be useful to others.