Feedback - September 2012

Social media survey results

In the May issue we asked you to tell us how you use social media as a chemistry teacher. Thanks to everyone who responded. This is already helping us to improve how we provide the information you need, when you need it.

Our table shows a summary of how you use social media, but you can find a much more detailed report online.

Talk Chemistry

There have been all sorts of discussions on Talk Chemistry recently.

Leonard Winning responded to our  Endpoint article on students writing assessments:

I really like the idea of Peerwise: I've registered and am trying it out with my L6 at the moment - the initial response has been very positive. Has anyone else tried this in a school rather than university environment? 

Mick Mahon posed this question: 

We teach that adding a catalyst to an equilibrium system does not alter the position, just the rate of equilibrium attainment, because it increases the forward and backward rate by the same amount. Why and how can that be? The activation energies will be different for the forward and backward direction. Does a change in forward/backward pre-exponential factors somehow exactly cancel the difference in E_a? Seems hard to believe. Or is it some outcome from the Boltzmann distribution curve? Or some other reason?!