Australia's Science Forum

A 40kg McAngus?
We get snakes -brownies, red bellies, tigers- but you can keep your crocs.

We have a double-sided fume cabinet, with access from Prep Room and Lab 1 (on other side of the wall).

Yes, smoking was common in labs. I was working in a QC lab for a major food company in the 80s - there was strictly no smoking in the production area, so the plant operators came into the lab for a smoko. I tried to get the lab designated a no-smoking area, but failed to get management support.

no coldies atm; just tried in hot tap water - same deal, both float
weighed 2 cans, about 14g difference

tried different cans, room temperature in tap water - all float
we using 200ml size; would that make a difference?

We put a can of coke and a can of diet coke in a beaker of water, and they both float - the regular coke's supposed to sink. Is there something we're missing?

I got some from Professor Bunsen.

thanx for replies - el cheapo GoLo came good this time - they had tubes of 15 Dream Glow sticks for $2 - might go back and stock up.

What's the best place to get light sticks? I usually go to cheapo stores, but the closest is a bit 'hit & miss'.

How about Methyl salicylate? ..smells like Dencorub - produced by esterifying salicylic acid with methanol.

David, there is some Rocket Science here; see thread 'Finally, what does Robb look like?' in Miscellaneous.
...and my job title

Lugol's I use is 1% w/v Iodine in 2% w/v Potassium Iodide solution (aqueous). Used as starch indicator - goes purple in presence of starch. Useful in brewing process to check whether starches in mashed grains have converted to maltose. Corrosive, but can be stored in dropper-bottles.

A few years back, a teacher asked me if the coloured dots on the chemical containers meant anything, so I explained the CSIS colour-coding system, and he's like - "you should make some charts and put one up in each lab" - so I say "I already have", and point out the one on the wa...

Does anyone else have a problem with teachers' electronic signature occasionally not appearing? I don't know if they still writing the prac or haven't signed, but when I chase them up they swear they signed it.

I'm term time only too, and only attend PD days when it suits me, e.g. to keep my 1st aid certificate up to date or Free Lunch. The teachers here have 4 PD days starting a week before kids come back -that aint 'term time' in my book- besides, is listening to someone drone on about albeit riveting to...

Gallium sounds cool; starts melting above 25degC. Anyone got some/know where to get it?

Both are corrosive, but only the anhydrous form liberates HCl gas on contact with water - the hexahydrate having already reacted with water, cannot react.

Gas chromatography using 1-propanol as an internal standard, but you'll need a GC.

Norwest Christian College at Riverstone might be worth an enquiry.