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Simon Dobbs's Shop

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I taught chemistry for 25 years. I now provide tuition online. I just like nicely produced, imaginative resources.

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I taught chemistry for 25 years. I now provide tuition online. I just like nicely produced, imaginative resources.
A step by step guide to one mole calculation
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A step by step guide to one mole calculation

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Burning ethane. If I burn 10g of ethane, how much carbon dioxide will I get? A simple powerpoint show. Two slightly different approaches are illustrated, , you could use either or both ( I have now corrected the error in the equation.)
Pretty Poly(mers)
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Pretty Poly(mers)

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This is a very simple worksheet. Link the name of the polymer to its monomer. Then draw the repeating unit. A drag and drop version may follow. Watch this space.
Free radical substitution cut&stick
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Free radical substitution cut&stick

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An introductory sheet of answers, followed by cut and stick exercise for this challenging mechanism. Cut and stick promotes familiarity with the mechanism, promotes discussion when done in groups, and is enjoyed immensely by sixth formers.
Electrophilic addition cut&stick
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Electrophilic addition cut&stick

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An introductory sheet of answers, followed by cut and stick exercise for this challenging mechanism. Cut and stick promotes familiarity with the mechanism, promotes discussion when done in groups, and is enjoyed immensely by sixth formers.
Reaction mechanism cut&stick nucleophilic addition
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Reaction mechanism cut&stick nucleophilic addition

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An introductory sheet of answers, followed by cut and stick exercise for this challenging mechanism. Cut and stick promotes familiarity with the mechanism, promotes discussion when done in groups, and is enjoyed immensely by sixth formers.
Naming Organic Substances 2
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Naming Organic Substances 2

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Second in a series. This worksheet covers different functional groups. Information on the front, 6 questions on the back. In black and white for ease of photocopying. With answers.
Functional Groups
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Functional Groups

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A very simple presentation listing major functional groups. Could be printed out and used as a display.
Nucleophilic substitution drag & drop
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Nucleophilic substitution drag & drop

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Double click on the .html file, et voila, it opens in your browser. Helps identify all the marking points in the mechanistic questions in an interactive way. Please note: in order to provide a rich interactive experience, my drag & drop resources are mini-web sites local to your computer. After unzipping, they comprise a folder containing the main .html file and another folder containing the graphic resources and my coding to make the resource work. Double click on the .html file and the resource will work. If, however , you move or delete any of the files frome this hierarchy, the resource will not work.
Electrophilic addition drag & drop
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Electrophilic addition drag & drop

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Double click on the .html file and it will open in your browser. Make it massive using the browser zoom controls if you so desire. Drag the symbols to the correct places. Gives a different flavour to learning mechanisms. Please note: in order to provide a rich interactive experience, my drag & drop resources are mini-web sites local to your computer. After unzipping, they comprise a folder containing the main .html file and another folder containing the graphic resources and my coding to make the resource work. Double click on the .html file and the resource will work. If, however , you move or delete any of the files from this hierarchy, the resource will not work.
Identify functional groups in coloured dyes
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Identify functional groups in coloured dyes

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This sheet is intended to provide practice in identifying and naming functional groups in organic substances. This is an important skill that repeatedly comes up in exam papers. As a theme, natural dyestuffs found in plants are used. There are five examples over two pages.
Eugenol: Practicexamquest
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Eugenol: Practicexamquest

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Exam boards often take unknown substances and ask students to apply their understanding of chemistry to them. To provide practice answering this type of question, I am developing a series of worksheets with this type of question. The series is called Practicexamquest.
Drag & Drop functional groups
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Drag & Drop functional groups

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Useful as a starter round the board. Drag the models next to the correct name. If it is correct it will stick, if not it won't. This tests understanding of functional groups and different types of molecular model. Double click on the FuncDragAndDrop.html file, and you're there
Recognising the Type of Reaction
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Recognising the Type of Reaction

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One of the most useful skills in answering many GCSE chemistry questions is to work out what type of reaction is involved in the question. This helps you work out what the products may be, but also answer other questions about the reaction. Students often find this very difficult, mainly due to a lack of practice and experience. This simple information sheet with questions at the back is in black and white so can be readily photocopied.