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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.
Water circuit analogy
simondobbssimondobbs

Water circuit analogy

(0)
In the past I have used a physical water circuit to explain to groups concepts such as potential difference and current. I wanted my own diagram of this, so produced this. Someone, somewhere might find it of use.
Exhaust gases
simondobbssimondobbs

Exhaust gases

(0)
I made a simple information sheet about combustion of fuels and pollution. Because I wanted to.
GCSE polymers
simondobbssimondobbs

GCSE polymers

(0)
A very simple worksheet to aid the distinction of addition polymers from condensation polymers. Explanation on page 1, questions on page 2.
Effect of osmosis on plant cells
simondobbssimondobbs

Effect of osmosis on plant cells

(0)
I have made a little interactive cartoon thingy about this concept. Double click on “osmosis.html” and it will open in your browser. Use the browser zoom controls to make it huge. May be useful as plenary around the whiteboard, in an interlude, etc etc. It can be previewed 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.
Free radical substitution dance.
simondobbssimondobbs

Free radical substitution dance.

(0)
Reaction mechanisms are beautiful dances, with the dancing atoms throwing out two (heterolytic ) or one (homolytic) arms out to their partner. Thus, I added a little beat to this reaction mechanism.