A simple animation to jazz up ionic bonding a little: covers sodium fluoride, magnesium fluoride and lithium oxide. Short and sweet. Just double click on ionic bonding.html and it will run in your web browser. If it’s too small, just zoom in with browser controls. A preview can be seen at on my web site. 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

identify the homologous series from the structural formula

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.

I made a very simple, very introductory presentation on redox reactions. It is intended to be totally entry level.

I recently downloaded the RSC’s very useful “education in chemistry” resource on titrations. The documents are beautifully produced, but I was appalled that the “diagram” column in the equipment tables were low resolution bitmapped graphics. I thought I would produce my own simple diagrams in vector form, so that they can be used at any scale without pixellation. I provide this as a pdf which you can copy and paste from freely, but if you need SVG files , please feel free to contact me via my web site. They may be of use to someone, somewhere.