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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.
Organic revision crossword
simondobbssimondobbs

Organic revision crossword

(0)
Some synoptic questions in the form of an interactive web-based crossword. Unzip the file and double click on the index (Works with edge, chrome and firefox, but not safari)
2,2,4-trimethylpentane- an interesting molecule.
simondobbssimondobbs

2,2,4-trimethylpentane- an interesting molecule.

(0)
2,2,4-trimethylpentane, or iso-octane used to feature heavily in the OCR Salters A level chemistry, because it is an important additive to petrol. It has slipped out of the specification, but the examiner must be sitting on many questions that might be recycled to test understanding. This is a simple information sheet that gives answers to a legacy question that one of my students was completing. It aims to answer difficulties with the question in a graphic way. The sheet runs to three pages and examines isomerism.
Cut & stick molecular shape
simondobbssimondobbs

Cut & stick molecular shape

(0)
Sixth formers love cut & stick. They reinforce understanding and promote discussion. Cut sheet and stick sheet, with spaces to write in bond angles, number of bonding pairs and number of lone pairs.
alkenes versus arenes
simondobbssimondobbs

alkenes versus arenes

(0)
I made a simple three slide presentation concerning addition reaction of alkenes compared with the substitution reaction of arenes. This is an important exam question topic and is poorly understood by students. I enclose both keynote and powerpoint versions.
stare in amazement
simondobbssimondobbs

stare in amazement

(0)
I made a pack of ten mazes with solutions to keep people quiet as the end of term approaches. Good for developing skills of concentration.