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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.
Density worksheet
simondobbssimondobbs

Density worksheet

(0)
I made a simple worksheet about density. 5 pages. Two of info, one table of values, a page of questions and my answers. I have now added a keynote and powerpoint version.
A titration calculation
simondobbssimondobbs

A titration calculation

(0)
I have tried to produce a clear example of an acid/base titration for use on the board or as a handout. I used colour to make it as clear as possible.
paper chromatography
simondobbssimondobbs

paper chromatography

(0)
An explanation of paper chromatography in a movie, with voiceover. In this animation, the dyes don’t smear, so students can see what is meant to happen, rather than what really does.
Aliphatic reaction mechanism revision.
simondobbssimondobbs

Aliphatic reaction mechanism revision.

(0)
I made a series of templates for the main aliphatic reaction mechanisms in OCR chemistry A level. They resemble exam questions where students have to complete the reaction with partial charges, lone pairs and curly arrows. The intention is that they can be printed out by students as often as is required, for practice. A solution is provided for each example. Included are: nucleophilic substitution, electrophilic addition, nucleophilic addition, radical substitution and elimination.
Phenolphthalein
simondobbssimondobbs

Phenolphthalein

(0)
I made an little interactive widget thingy about the coloured forms of this indicator. It can be seen on my web site. Please note: in order to provide a rich interactive experience, my interactive 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. ©D&D production
Dewar Benzene: practicexamquest
simondobbssimondobbs

Dewar Benzene: practicexamquest

(0)
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.”