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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.
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.
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.
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.
An atom anatomy
simondobbssimondobbs

An atom anatomy

(0)
I made a simple display of the atomic structure of various isotopes, with the emphasis on simplicity and clarity. Just because I wanted to. I also included it as keynote and powerpoint presentations.