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Simon Dobbs's Shop

Average Rating4.67
(based on 27 reviews)

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.
Cut & Stick reaction mechanisms
simondobbssimondobbs

Cut & Stick reaction mechanisms

5 Resources
Sixth formers love cut & stick exercises. They are valuable because they familiarise the student with the mechanism, they promote discussion when done in groups, and are different to taking notes and practical work.
Bunsen Burner cut & stick
simondobbssimondobbs

Bunsen Burner cut & stick

(0)
A very simple (and so clear) labelling activity. (NB. Please also see my interactive, drag & drop version, for £1.00, in my shop.)
Neutralisation Reactions
simondobbssimondobbs

Neutralisation Reactions

(0)
This is a simple worksheet about writing word equations for neutralisation reactions. It covers 2 pages. There are plenty of examples, which get harder as you go on. There is an accompanying powerpoint, as an additional download… NB I am well aware that exam boards, RSC and text books regard acid plus metal to be a redox reaction, which of course it is. However, in such a reaction, the pH increases to neutral and the acid has gone, so I think it can properly be regarded as neutralization of an acid. And since this worksheet is really about naming salts, I had to include it.
Rate of reaction simulations
simondobbssimondobbs

Rate of reaction simulations

2 Resources
Disappearing cross plus gas syringe simulations. 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. stdobbs.com ©D&D production
Relative molecular mass.
simondobbssimondobbs

Relative molecular mass.

(0)
A simple worksheet giving lots of examples of calculating Mr values. answers included. Black and white for ease of photocopying. Consists of introductory page, examples on back, and final page with answers.
NMR examples explained
simondobbssimondobbs

NMR examples explained

14 Resources
Colourful, comprehensible, clear examples to illustrate the interpretation of proton NMR spectra. Could be used as a display, or on the whiteboard, or as a handout.
Rate of reaction with a gas syringe simulation.
simondobbssimondobbs

Rate of reaction with a gas syringe simulation.

(0)
I have made a simulation of the marble chips and acid experiment at four different concentrations of acid. Just double click on the “gas syringe.html” file and it will open in your web browser. You could use browser zoom controls to make it huge if you wish. Maybe take measurements of volume of gas evolved against time or just use to introduce the experiment or revise. ( the price for this could save your department many times in broken gas syringes.) Please note: in order to provide a rich interactive experience, my 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.
End of term Science crossword
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End of term Science crossword

(0)
A little bit of ‘learning without working’ activity for the end of term, in black and white for easy cheap photocopying. Suitable for all abilities, but earlier years may need to look some clues up. The answers are included.
The disappearing cross experiment simulation
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The disappearing cross experiment simulation

(0)
I have made a simulation of this experiment at four different temperatures. Double click on the “disappearing cross copy.html” file and there it is in your web browser. Students time the cross disappearing, after someone presses the button and shouts go. Saves a nasty experiment with hot solutions and sulfur dioxide. Use over and over again. You can make it huge by using the browser zoom controls. A preview is available at https://www.doctorexe.com/disappearing-cross.html Please note: in order to provide a rich interactive experience, my 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.
Esters worksheet
simondobbssimondobbs

Esters worksheet

(0)
Introduction on the front, eleven questions on naming esters on the back. All in black and white for photocopying cheaply. To save you some time. Useful for GCSE, but could be used at A level.
Nucleophilic substitution mechanism cut'n'stick.
simondobbssimondobbs

Nucleophilic substitution mechanism cut'n'stick.

(0)
A cut and stick exercise to help reinforce this very important concept. Students cut out the pieces and arrange the pieces to give the correct mechanism. Prepares students for those five mark questions where they often lose marks. Other mechanisms to come plus drag and drop versions, so watch this space…
Chemical Analysis wordsearch
simondobbssimondobbs

Chemical Analysis wordsearch

(0)
A simple wordsearch on 1 side of A4. It is quite a challenge! For GCSE chemists. ( I have now removed an error which had two letters in one box and one box with a space. I had to make it bigger and spread the puzzle onto two sides, one side with clues and one with the puzzle grid. Apologies to those who bought the defective version- contact me for a replacement)