A very tiny titration. Mainly for (my) amusement.

I came across an exam question which asked the student to identify an ester from two apparently very similar structures and a proton NMR spectrum. This is my attempt to explain the spectra pictorially. I will bundle it with my other ‘NMR examples explained’ series. (NB, I used spectra from a database. The original question shows an expansion of the multiplet peak due to methyl groups as a heptet, ie seven peaks, due to six protons, although this appears to be simulated. The methyl groups appear to be chemically equivalent to me so the multiplet should be a quartet, due to three protons, but I cannot tell from the database spectra. I have stuck with the exam board interpretation and mark scheme. The question is OCR A F324 Wednesday 27 January 2010 question 4)

For AQA GCSE Chemistry.

As it says on the tin. Suitable for AQA GCSE chemistry.

A simple wordsearch for AQA GCSE chemistry. It might save you a few minutes.

This is a simple powerpoint giving names and formulae of ions. Knowledge of these can provide a key to understanding chemistry at GCSE and A level. Print these off, laminate them, and display in a prominent position in a lab. (NB I have corrected the ammonium ion error)

Low levels of Serotonin are implicated in human depression. This worksheet asks exam-style questions about this essential neurological agent.

Synoptic exam-style homework or classwork questions.

Exam-style questions using vanillin as an example. their are eight questions over two page.

Based on AQA chemistry specification.

An exam-style question about paracetamol. Part of the Practicexamques series.

I got out my felt pens again and made a naive little movie of this reaction, just to show where the atoms come from and go to. No mechanism in sight.

Exam-style questions centered around tryptophan.

A tiny sheet where the student fills in the name of the reaction and the required reagents in the boxes. Start of a series. Covers reactions in OCR B.

A tiny sheet where the student fills in the name of the reaction and the required reagents in the boxes. Start of a series. Covers reactions in OCR B.

A tiny sheet where the student fills in the name of the reaction and the required reagents in the boxes. Start of a series. Covers reactions in OCR B.

Made in response to confusion of a student. A tiny, nutty little video about this. Sixth formers might find it amusing and therefore memorable.

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.

Join the ions that cause precipitation. I have included an answer plus an OCR table of solubilities.

I made a crazy little video thing to give insight into precipitation.