Tag: Chemistry

Apr 23 2012

Pique the Geek 20120422: The Isotope Effect

The germ of this piece came from an undertaking that I am considering.  That undertaking is to write a post for every chemical element.  The recent successes of my more technical pieces have made me decide to concentrate more on the harder part of science rather than less technical material.

The problem with that is that it would take over two years to cover all of the elements, and in reality even longer because there are topics out there that will surely be more topical.  I am not sure that this is feasible.  Maybe I could look at families, but then that gets way too general.  Any thoughts on how to approach (or even if I should) this huge array of subjects would be appreciated.

In any event, I would start with hydrogen and work my way to heavier elements.  One of the first things that came to mind was the isotope effect, because hydrogen has the largest isotope effect of any element.  Please stay with us!

Nov 29 2010

Pique the Geek 20101128: Kitchen Chemistry and the Interstellar Terrorist Threat

In the kitchen, oftentimes we desire to thicken a sauce or a broth without significantly changing its flavor.  There are several ways to do this, and the physicochemical principles behind them are quite different in many cases.  One way of thickening things is just to reduce them (i.e., boil them down), but that often involves chemical changes that alter flavor.

Other ways of thickening things including adding small amounts of rather bland ingredients that cause the sauce or other material to become thicker without extreme heating, or to create a complex emulsion that thickens materials due to physical rather than chemical changes.  We shall examine some of both this evening.

Jul 05 2010

Pique the Geek 20100704: The Science of Fireworks

This has been sort of a recurring theme for me the past few years for the installment nearest Independence Day.  You can hit my profile and find the earlier entries in this series.

This time, I intend to focus on the single greatest improvement in technology (other than the development of black powder) that has made modern, highly colored fireworks possible.  Until relatively recently the only colors available were white, yellow, and a dull red, with very faded out, compared to today, other colors.

First some theory, then some facts.  Please follow.