Australia's Science Forum

anyone know why Scienceassist suggests not disposing down sink? that would save the sinks when the darlings chuck it into the sink and don't wash it down!!

Sharon

Also in the market. saw the westlab unit but agree looks a little small. thought I'd go the other extreme and got a price for lab glassware washer. (top of the range possibly) with all the extra racks nearly $9000. I'm sure it would do a fantastic job but out of our price range.
Sharon

we had a Canadian (Vancouver) exchange teacher for 12months. -went home after term 2. he said they don't have science assistants in schools in Canada, so i was a 'luxury' he wasn't used to!! seems like a great adventure to have if you can organise it!!

Hey Xenon, thought i needed to reply as no one was talking to you. we have a Helios Planetarium which is a pretty fancy thing and is much more than a solar system model. does heaps more than what we need as a Junior high. great setup, had it for ever, is roughly to scale. pretty pricey though and no...

looks like you only need your gold tooth or a few Nobel peace prizes!!!


http://scienceblogs.com/moleculeoftheda ... quid-gold/
Shas

Just wondering what you are doing that it needs to be in the fume hood? I can't remember the last time I used the bunsen burner in the fume hood. Just wondering what you are doing that it needs to be in the fume hood? Hi Fibreweb, the gas tap in the fume hood is the only one i have in the prep room....

that problem wouldn't happen to be that the bunsen gets blown out when the fan of the fume cupboard is on? the flow rate of air in my fume hood was too great for the pressure in the gas line. when i had my fume hood tested last time, the technician solved the problem for me by wrapping 2 sides of th...

in a time long, long ago, agar plates were a regular necessity. but we'd make a batch of agar, store in little bottles, capacity of 1 plate and store in fridge. when you needed them you'd grab the number reqd, heat in water bath, pour into petri dishes and away you'd go. at another location, we'd ju...

a few years ago, i had a teacher explode custard. ifrom memory, the theroy was the same.

haven't tried it since.
Shas

fortunately we don't have heaps. :clap3: but what we do have are in buckets with coloured lids and matching coloured paper labels - one type of rock per bucket. 4 colours - met, ig, sed and minerals. KISS!!!! :D sounds a similar system to fibreweb but without numbers and photos. we got the buckets f...

Thanks Lada. all makes so much sense when you have such cluey people at their computers.

Shas

could someone help pls........... decomposition is flavour of the month here at the moment. had a teacher who had converted CuO with sulfuric acid to copper sulfate. her method said to then filter and heat to evapourate water. the heating generated copious amount of vapour - not just water vapour. I...

when i went hot air ballooning in the Hunter valley , the company let off a couple of balloons before the flight. maybe you could contact them to find a supplier. hope you have some kind of success

Shas

The silica gel has the ability to absorb any moisture in its environment. you can't see inside the little pillows but when it's saturated the silica gel turns pink. when it's bright blue it has capacity to absorb moisture. you can dry out pink silica gel by putting it in the oven :coffee: and watch ...

Maybe what your thinking of is a dessicator. :thumbup: I'm sure you could google it. you need to put some silica gel or some other substance in the bottom to absorb moisture. it has a tight fitting lid so you create a dry atmosphere. if you use one, make sure you grease the seal between lid and base...

somewhere through the years someone suggested using freshly cut piece of styrofoam and give it a rub.
nothing ventured nothing gained!!!!

Sharon

Josie,
this makes no sense at all!!!!!
Love to know what the problem is once you've worked it out. contamination with glassware?? sounds like you've tested all the obvious things. anything dripping from above to contaminate??


Good luck.
Sharon

Hi Merilyn, we've used ours to melt chocolate for those yummy rock models - conglomerates etc with chocolate, marshmallows and any thing else you want to add. also when i was at tafe, they used aero bars to determine the weight of air!!!!!!! weigh the aero then melt it - releasing the trapped air bu...

We're looking at buying new large hanging type periodic table also. i have a braochure from Graphic Education http://www.<URL removed, see forum rules> their promotional stuff says - 5 kinds of media in different sizes. get the choice of paper, tough vinyl, polypropylene, canvas or banner fabric tha...

When my cherubs fill the griffins with solution, I usually suck some water into the bulb, give it a swirl, and then expel the water. i might rinse with fresh water a couple of times, then get rid of as much of the water from the bulb as possible. i then leave it on my nice warm sunny windowsill (or ...