Right so i have an assignment on which i have to spend a total of 8 hours in the week presenting and carryi ng out a chemistry/Biology based experiement to do with the concept of time. Problem is, i dont have any ideas! I did want to do the rotting of food over time, but apparently im not allowed to do that.

anyway, i was wondering if you guys have any ideas ?? It has to be viable, ie. no ridiculous experiements requiring masses amounts of equipment. I have a week to do the tests, so id appreciate if you guys could tell me the methods of your ideas in terms of testing it.

Thanks!

Grow crystals

Grow crystals

This

or:

Decomposition of hydrogen peroxide
bacteria growth on cheese (yummy)

Right so i have an assignment on which i have to spend a total of 8 hours in the week presenting and carryi ng out a chemistry/Biology based experiement to do with the concept of time. Problem is, i dont have any ideas!

How many security alerts are you willing to trip?

'cause - to me - this just screams for the consumption of bromine as a visual indicator in the half-life of tritium*... but the first step in the synthesis is along the lines of "step 1 - build a nuclear device," and... well... that sort of depends on the culture in which you live and how much you're willing to answer questions just to have a cooler experiment than everyone else.

* carefully-synthesized selective tritiocarbons would transform from alkanes to alkenes with the evolution of helium upon tritium decay. Bromine itself wouldn't directly change much in the presense of the radiation of decay - though tritiobromic or tritioiodic acid would kick out Br2 or I2 much more readily, which could be a better visual indicator - especially TI -> I2 in starch. ;)

just to have a cooler experiment than everyone else.

The only important thing.

As SoH says, decomposition of H2O2 with catalase from yeast is very easy to do, requires little in the way of specialist materials, and enzymes can be talked about hours.

You could just do something pussy like rates of evaporation in set times at set temperatures, or yield of something simple at different times spent reacting. But that's boring as hell.