Australia's Science Forum

something unexpectedly stoopid

hahahhaaaaaaa the stoopidness is expected here

Rosaliemb,
I replied to you PM yesterday but it's still sitting in my outbox and I dunno how to make it go

thanks guys I will leave it on the 6.1 shelf and move the other sample to this shelf aswell and add a 6 sticker to it. phew glad thats sorted.

hi everyone, I got a bottle of Potassium Dichromate today with a chemical order and I'm confused about which DG class it is. The Small amount that we had given to us (because we didn't have any) from a neighbouring school is labeled as 5.1 Oxidising agent but the bottle I got yesterday is labelled 6...

True it is all calcium carbonate but I would say Marble. Limestone is a lot softer and isn't shiney if that makes sense. the marble chips I have are hard and shiney so go for the marble

Smiley, how many of the vernier data loggers do you have ? and how many of each sensor?
or to everyone else how many units do you have?

I do the same as sunray, leave in the fume hood to evapourate, but only if there are small amounts, otherwise it gets saved for collection.

there is a thread called chemffx upgrade that might be of use

Hi All,
I am trying to orgainse next years budget and we are looking at getting a set of data loggers with a bunch of general sensors. What sensors do you have and what ones would you recommend for a basic set?

the snow ball prac invoved mixing ethanol with the calcium acteta to form a jeely like ball rinsing it off and them setting it on fire. It's a demo to show ethanoll doesn't burn as hot as other things. once the snowball is on fire you can apparently play catch with it, so probably not very helpful f...

Maybe just suggest they use vegetable oil, as it is easier and cheaper to procure. A little off track when I was a kid on the farm my mum use to make soap out of sheep fat when we slaughtered sheep. She would cook it up in a big pot and strain the sinew out of it and they make her soap VERY STINKY. ...

http://au.news.yahoo.com/a/-/mp/7904457 ... xperiment/
Take a look at this! HOw could this ever happen.
Bet the Labbie had no Idea it was going on.

Im making up 150mol of 1 M CuSO 4 , now for some reason (probably cause it's monday) im confused about how much water I add. Do I measure out the 37.45 g of CuSo 4 and add 150mls of water or do I measure out the 37.45g of CuSO 4 and fill with water to the 150ml line? I kneo it's not going to make mu...

Hi,
I have a bunch of rusty test tubes that have been soaking in napisan for days (some more than a week). Most of them have come clean but there are a few very stubbourn ones. Now I don't have any Oxalyic acid what else could I use to clean these up? someone mentioned 3M HCL will this work?

You could do something similar to you Plaster prac but with NaOH? But you would have to do aN RA on it i guess

Hi Lyn,
I would be great if you could email that to me Rowann.Lambert@ntchools.net I have the OH&S manual Science Guidelines 2008 but it doesn't seem to cover which chemicals are allowed for each yr level.
It is being used for yr 11 chemistry so I'm good on that one .
Thnaks!.

How long does a solution of potassium dichromate last? i'm not talking acidified or anything just plain ole 0.1 M K₂Cr₂O₇ in distilled water? need some on wednesday (my day off) can I make it up tomorrow? will it be ok?

Labbie your not alone the lock on my compactus was forced open two weeks agon on my day off and now the key wont even fit in it anymore so it can't be locked at all. It really is disgusting , if the kids behaved like this they would be expellled! Also got to work yesterday to find the chem store WID...

eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee I might actually be able to go cause it's just up tha road well about 30k's up tha road but I can manage that an since I haven't had any PD since I started I dont think the powers that be could refuse

The Laboratory by barbara dungey has a living cell stain it is bases on methylene blue and is called Vital stain. If you have the book it is on page 131 1g of methylene blue 0.6g sodium chloride 100ml distilled water dissolve sodium chloride in distilled water and add methyelene blue place 1 drop of...