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Simon Dobbs's Shop

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(based on 34 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.
Effect of pH on amino acids
simondobbssimondobbs

Effect of pH on amino acids

(1)
I made a crazy interactive widget to illustrate the ionic forms of glycine. Just for fun really. 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.
Phenol worksheet
simondobbssimondobbs

Phenol worksheet

(0)
A simple, readily photocopied worksheet on phenol. Information on the front, six questions on the back.
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.
The disappearing cross experiment simulation
simondobbssimondobbs

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 on my web site. 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.
Rate of reaction simulations
simondobbssimondobbs

Rate of reaction simulations

3 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. ©D&D production
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. I removed the spurious reaction of copper metal with dilute acids (woops, senile moment)
Covalent bonding
simondobbssimondobbs

Covalent bonding

(0)
I have made a cartoon of dot cross type diagrams for all of the structures on the AQA specification. Simple double click on the covalent bonding.html file and it runs in your browser. Its nice and colourful, big and bold (zoom in with your browser to make it as big as possible). Could use around the whiteboard, or for independent study at a computer. It’s not intended as a whole lesson, but as a useful resource that can be revisited a number of times with a class to reinforce what they need to know for the exam. Could be starter or plenary or interlude. Please note: in order to provide a rich interactive experience, my drag & drop 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.
Chemistry quiz
simondobbssimondobbs

Chemistry quiz

(0)
I made an intertactive widget thingy with multiple choice questions about KS 4 chemistry. Point at the correct answer and click. Instant feedback provided. 20 fun questions. 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.
halogen carrier
simondobbssimondobbs

halogen carrier

(0)
i made a tiny cartoon trying to explain how the halogen carrier works in friedel crafts (PS: you can use the youtube version for free)
Making bonds
simondobbssimondobbs

Making bonds

(0)
A minute video giving defintions of nucleophile and electrophile. Because I could.
Calculating an enthalpy change.
simondobbssimondobbs

Calculating an enthalpy change.

(0)
I made a crazy cartoon illustrating the calculation of the enthalpy change from bond enthalpies for the reaction between chlorine and hydrogen. Just for fun really. Note: the youtube version is free.
Pretty poly(mers) drag&drop
simondobbssimondobbs

Pretty poly(mers) drag&drop

(0)
Double click on pretty poly(mers).html, and the activity will open in you browser. Simply drag the structure of each monomer to the box next to the name of the polymer. Good AFL around the whiteboard. A paper version is also available. Suitable for GCSE and A level students. 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.