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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.
For Chinese native speakers - learning the English words for the elements of the periodic table
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For Chinese native speakers - learning the English words for the elements of the periodic table

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These activities were developed to help native Chinese students learn the English words for the elements of the periodic table. Our lessons are slower than in the typical timetabled class. I found that these worksheets helped the students gain confidence in the spoken and written word as well as learn about the periodic table. Over a 2 week period and many practical activities there was a significant increase in their communication and general engagement in the classroom. This resource bundle includes a funworder where the student must find the element (and atomic number) based on the Chinese word; two worksheets which require the student to fill in the English word or the Chinese word and a cross word puzzle. Answers are included. I am not a native Chinese speaker and have had the resources checked by a native speaking Chinese student. If there are any errors please get in touch and I will make the appropriate changes. I would also like feedback as I have a series of resources I will be publishing in the coming weeks. Your feedback will help direct my focus.
Chemistry: test-periodicity
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Chemistry: test-periodicity

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This resource is a test that covers various aspects of periodicity: sub atomic numbers, electron configuration, assigning charge to ionic species, some electrolysis questions and a few word equations (eg. photosynthesis) requiring symbols equations. The test takes about 1 hour.
Chemistry: weak acid and weak base calculations and questions-1
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Chemistry: weak acid and weak base calculations and questions-1

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This resource contains some pH worked calculations and notes. The 2-page work sheet has weak acid and weak base problems as well as 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.
Chemistry: test REDOX  - 1 hour
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Chemistry: test REDOX - 1 hour

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This test is about 1 hours long. It includes questions about calculating oxidation number, observations and balancing half and full REDOX equations. This test would be useful for students doing AP or Honors chemistry. Answers are included.
Chemistry test- 14-16 yr olds
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Chemistry test- 14-16 yr olds

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This test comprises about 45 marks worth of short answer questions (4 pages long). The focus is on the periodic table, electron configuration, balancing simple word and symbol, equations, universal indicator colors and a few questions concerning the electrolysis of NaCl. Answers are included.
Chemistry: practical - acid-base experiments for young students
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Chemistry: practical - acid-base experiments for young students

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This resource contains 4 simple experiments that have been successfully used in the laboratory for students aged from 10-14 years of age. The aim, through simple experiments, is to encourage safe working with chemicals and familiarity with equipment. One experiment is based on the use of plastic burettes where students are asked to work out which solution is the strongest (most concentrated). The use of burettes adds the 'wow' factor for budding young Scientists. They will talk about it for weeks to come. The experiments are based around color change with common acids and bases and Universal Indicator. A short set of instructions explaining how to make a home made indicator is also included.
Chemistry: organic - elucidation of unknowns
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Chemistry: organic - elucidation of unknowns

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This work sheet has a series of unknowns (a-o) that are either a reagent or a product. The reactions are limited to oxidation, reduction, nucleophilic substitution, chlorination, cyanation and addition reactions. The worksheet will suit students enrolled in Honors, AP or with an interest in the National Chemistry Olympiad competition. Answers are included.
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 Honors or AP courses.
Chemistry: practical - MnO4 - oxalic acid and MnO4-Fe(II) titration
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Chemistry: practical - MnO4 - oxalic acid and MnO4-Fe(II) titration

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This resource consists of two experiments. The first is the permanganate - oxalic acid titration to standardise the permanagate. The second uses the permanganate solution to determine the concentration o f a solution of unknown concentration of Fe(II). These practicals would suit Honors and AP students experienced with REDOX chemistry. The resource has the template for data collation built into it. The resource is 4 pages long. Key words: titration, oxalic acid, permanganate, iron, calculations, practical
Chemistry: practical - careful choice of an Indicator
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Chemistry: practical - careful choice of an Indicator

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This experiment gets students to compare pH titration data collected using different indicators. It shows the importance of choosing the correct indicator. The experiment(s) are easily carried out in 50 minutes and students can do up to 8 titrations during the class. Data is reported back to the teacher and the results shared with the wider class. Student feedback suggests this is a very useful practical and the repetitive nature of the experiment allows them to fine-tune their experimental skills. The practical will be useful for those studying acid-base chemistry and buffer systems. Students enrolled in Honors and AP courses would find this practical beneficial. Notes for the teacher are also included Key words: buffer, acid-base, equivalence point, buffer zone, practical, pKa, indicators.
Chemistry calculations: using the formula n = m/M and calculating % composition
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Chemistry calculations: using the formula n = m/M and calculating % composition

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This resource consists of three double-sided works sheets with over 45 questions and worked answers. Each problem requires students to either calculate the number of moles, mass, molecular mass or % composition. This resource would suit those learning to use n = m/M for the first time. 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.
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: Balancing REDOX equations: notes and problems
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Chemistry: Balancing REDOX equations: notes and problems

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This resource consists of some general REDOX notes, which outline how to balance REDOX equations and 2 double sided worksheets (and answers). The exercises include oxidation number elucidation, balancing half equations and balancing full equations. This resource would suit students who want to progress in the Honors program.
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.
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.