Hmmmmmmm
Sounds like building explosives by stealth. A definite NO seems in order.
Search found 1042 matches
- 14 Mar 2014, 14:05
- Forum: Recipes and Pracs
- Topic: zinc sulfur experiment
- Replies: 5
- Views: 3368
- 14 Mar 2014, 13:39
- Forum: Safety with Chemicals
- Topic: Risk Assessment
- Replies: 44
- Views: 20480
Re: Risk Assessment
Yes we subscribe to both. The students use their Student RiskAssess as part of their EEI's, which also gives them relevant info to talk about in their Process Journals. We use RiskAssess as my timetabling medium, so teachers HAVE to use RA to get a prac. They now even do one, when they only want som...
- 27 Feb 2014, 12:42
- Forum: Biology, Physics...
- Topic: Evolution of Australian Biota
- Replies: 5
- Views: 3215
Re: Evolution of Australian Biota
What about looking at something like the limb reduction in skinks and the legless lizards in Australia. I remember finding a chart once that showed how the body became more elongated as the legs/toes were reduced, and that therefore the gait became more like a slither. Is that what you're looking for?
- 28 Nov 2013, 14:25
- Forum: Recipes and Pracs
- Topic: Edible roks experiment
- Replies: 6
- Views: 3716
Re: Edible roks experiment
Rice bubbles
- 26 Nov 2013, 07:51
- Forum: Announcements
- Topic: Science Conference at St Mary's
- Replies: 25
- Views: 9611
Re: Science Conference at St Mary's
I want to come!!!
Have fun guys.
Have fun guys.
- 26 Nov 2013, 07:50
- Forum: Biology, Physics...
- Topic: Biotechnology ideas
- Replies: 6
- Views: 3624
Re: Biotechnology ideas
CSIRO does a lot like the Sheep Blowfly program in Canberra, and the corresponding Screw-Worm fly program in PNG. They create mutations that have adverse survival results - e.g. blind, or wrinkled wings, or infertile offspring etc - and release quantities of these flies into the wild populations to ...
- 22 Nov 2013, 19:03
- Forum: Sourcing Materials & Eq Repairs
- Topic: USB microscope
- Replies: 2
- Views: 1722
Re: USB microscope
I saw one on a PD day - they're very Primary School. You can take photos etc, but it depends on what you want a USB microscope for. We use our Motic, from AIS, to take photos of leaf cross-sections and leaf surface slide and then count stomata or measure pallisade layers etc using the measurement pr...
- 20 Nov 2013, 17:37
- Forum: Miscellaneous
- Topic: what couldn't you do without
- Replies: 41
- Views: 14157
Re: what couldn't you do without
Gratnells - love my Gratnells. AND my lovely Gratnell trolleys that go with it.
- 20 Nov 2013, 17:23
- Forum: Chemistry and Labware - General
- Topic: Potassium Dichromate
- Replies: 14
- Views: 5594
Re: Potassium Dichromate
I recall that Yes, we're not supposed to burn it any more in volcanoes, but no it's not banned and is still OK to use for Seniors.
- 19 Nov 2013, 20:54
- Forum: Biology, Physics...
- Topic: Brix meter
- Replies: 3
- Views: 2453
Re: Brix meter
We just use hydrometers from the brew shop. You can also buy a sugar hydrometer which used to be used specifically for diabetes checks prior to Testape. Somewhere in internet land is a conversion table, coz all our little cherubs - well, the biggish ones really - had to do conversions from their hyd...
- 18 Nov 2013, 15:21
- Forum: Recipes and Pracs
- Topic: conduction of electricity in salt and sugar solutions.
- Replies: 4
- Views: 2525
Re: conduction of electricity in salt and sugar solutions.
Ahh Ocker, if only. But yes, they didn't irradiate my sense of humour, thankfully.
- 18 Nov 2013, 13:25
- Forum: Recipes and Pracs
- Topic: conduction of electricity in salt and sugar solutions.
- Replies: 4
- Views: 2525
Re: conduction of electricity in salt and sugar solutions.
Well carbon is safest. Although I wouldn't use a transformer with Yr 7's. We use a simple battery circuit, with alligators, a mes (little light globe stand bizzo) and carbon electrodes. There are fairly simple conductivity rigs out there, using wire probes, that can work in a test tube, for example....
- 16 Nov 2013, 09:00
- Forum: Safety with Chemicals
- Topic: Risk Assessment
- Replies: 44
- Views: 20480
Re: Risk Assessment
Speaking of cost...beware the Pearson's experiments. They are often bucket chemistry! :-( You will see things like "give every child four 250 mL beakers, 100mL of oil" etc, for a prac that can (and was) done very adequately in 25mm test tubes. Some of their pracs also either transmit very ...
- 13 Nov 2013, 08:50
- Forum: Safety with Chemicals
- Topic: Risk Assessment
- Replies: 44
- Views: 20480
Re: Risk Assessment
I'm with Lyn - it's heaven. The timing recording is SO useful, for all the reason she listed. And at least it does challenge the teachers to consider the risks. Interesting is when the PE/Science teachers, or Maths/Science teachers (i.e. not specifically Chemistry trained teachers) put in a prac req...
- 13 Nov 2013, 08:42
- Forum: Chemistry and Labware - General
- Topic: Physics equipment ID
- Replies: 11
- Views: 5147
Re: Physics equipment ID
Love how your mind works, and jealous that you got to say it first!
I would have said an old centripedal force rig, except, as was pointed out, that they are clearly different types of wires. I ask one of my teachers here.
- 28 Oct 2013, 10:18
- Forum: Miscellaneous
- Topic: Bunsen Burners
- Replies: 11
- Views: 4996
Re: Bunsen Burners
I'm with linotas - hotplates
- 15 Oct 2013, 19:12
- Forum: Safety with Chemicals
- Topic: Flame test kits
- Replies: 64
- Views: 31641
Re: Flame test kits
Buy the "Dame Edna" glasses from ProfBunsen (less than $2 each) then get all the kids to wear them, turn off the lights and do it as a demo! Take notes between flames, and let them work out the unknowns. Uses less chemicals, but still lots of engagement owing to the fun glasses.
- 15 Oct 2013, 18:28
- Forum: Announcements
- Topic: Holidays
- Replies: 21
- Views: 7646
Re: Holidays
Lucky you! Where are the photos? The good ones I mean, not the ones of you feeling sick!
- 15 Oct 2013, 18:26
- Forum: Chemistry and Labware - General
- Topic: Hazardous products of reactions
- Replies: 8
- Views: 4587
Re: Hazardous products of reactions
One of my teachers once made acetylene when trying to clean up some crucibles that had MgO in them. Not sure how he did it, but I was glad we were using 20mL crucibles and not 500mL beakers!
- 15 Oct 2013, 18:19
- Forum: Sourcing Materials & Eq Repairs
- Topic: Dataloggers
- Replies: 6
- Views: 3428
Re: Dataloggers
Ditto. Love my Verniers. Nice customer support (at least up here in Qld) from Scientrific too.