Search found 406 matches
- 08 Feb 2022, 09:35
- Forum: Safety with Chemicals
- Topic: Taking Mercury to the class room
- Replies: 19
- Views: 9069
Re: Taking Mercury to the class room
I understand. I have never had a spill in over 30 years, I had a teacher play with it back in the early 90's, and had broken thermometers etc. you can put a powder over it and suck it up. As I understand it, it vapourises at room temp and is absorbed thru' the skin. We are all wearing masks and we d...
- 07 Feb 2022, 14:31
- Forum: Safety with Chemicals
- Topic: Taking Mercury to the class room
- Replies: 19
- Views: 9069
Re: Taking Mercury to the class room
I have a spill kit, can't remember where I got it, Westlab or Haines. I have a bit in a jar in a jar with a ball bearing floating on it. Supervision only. If you are careful it's OK. I think kids should get to see, and learn to respect, chemicals. Mercury is everywhere, in the oceans and the atmosph...
- 02 Feb 2022, 10:39
- Forum: Chemistry and Labware - General
- Topic: Interchangeable joint kit
- Replies: 16
- Views: 3879
Re: Interchangeable joint kit
Interested to know if people are still doing this prac. We do distillation in year 7 with quickfit. Don't think we do and fractional distillation anymore.
- 08 Dec 2021, 14:18
- Forum: Recipes and Pracs
- Topic: catalystic rainbow
- Replies: 3
- Views: 3418
Re: catalystic rainbow
No that's the junior one. I found Rainbow reaction that goes through all the colours using KI, NaS2O3, CH3COOH and the catalyst is H2O2, but I dont know how to dilute the 35% to 40vol now. Great prac but I wanted the the other one.
- 01 Dec 2021, 11:21
- Forum: Recipes and Pracs
- Topic: catalystic rainbow
- Replies: 3
- Views: 3418
catalystic rainbow
Does anyone know the reaction using ammonium molybdate? I vaguely remember sodium acetate? and that's it, maybe H2O2 as well. You make up 2 measuring cylinders and then put the catalyst in one and it goes through the rainbow colours.
- 30 Nov 2021, 12:08
- Forum: Recipes and Pracs
- Topic: Bunnings caustic soda/NaOH
- Replies: 1
- Views: 2924
Bunnings caustic soda/NaOH
Has anyone tried Bunnings Glitz Caustic Soda (NaOH)? It seems to be all sodium hydroxide and I dont have to pay heaps for delivery and a dangerous goods levy. My pure stuff absorbed moisture and I needed it immediately. Seems OK.
- 30 Nov 2021, 10:33
- Forum: Sourcing Materials & Eq Repairs
- Topic: Gratnells glasses kits from MTA
- Replies: 14
- Views: 2099
Re: Gratnells glasses kits from MTA
We have a big shoe or sock (or something), holder hanging on the end of the labcoat rack, but with covid I had to ensure they were glen 20'd after use, now they are back in the hanger. holds 20 so some are doubled up, and I have the tubs as well, like the cardboard idea too, I will try it out..
- 23 Nov 2021, 14:35
- Forum: Recipes and Pracs
- Topic: Open Day Ideas
- Replies: 87
- Views: 61236
Re: Open Day Ideas
Me too please. mary.gorman@education.vic.goc.au
- 23 Nov 2021, 14:30
- Forum: Recipes and Pracs
- Topic: blue bottle prac
- Replies: 5
- Views: 3123
Re: blue bottle prac
Traffic light is good too
- 23 Nov 2021, 12:21
- Forum: Recipes and Pracs
- Topic: blue bottle prac
- Replies: 5
- Views: 3123
Re: blue bottle prac
Blue Bottle Prac:- For future reference. Half fill a 1 litre flask with water and add 10g of sodium hydroxide (or dilute 125ml of 2M NaOH to 500ml) then add 10g glucose and up to 1 ml of a 1% solution of methylene blue. Stopper the flask and swirl to dissolve contents. I have the equations to explai...
- 23 Nov 2021, 12:12
- Forum: Recipes and Pracs
- Topic: magnetic slime
- Replies: 5
- Views: 3265
Re: magnetic slime
Same. Used to work years ago and now it doesn't really slime. I think the PVA must have changed.
- 15 Nov 2021, 08:51
- Forum: Miscellaneous
- Topic: what weird/quirky things do your teachers ask of you?
- Replies: 51
- Views: 22510
Re: what weird/quirky things do your teachers ask of you?
Re Stiles pracs, I modify and rewrite them if they suck. Our orders every single little thing has to be done online through compass, approved by the AP and my HOD, so now the teachers have to buy the last minute stuff.
- 15 Nov 2021, 08:34
- Forum: Miscellaneous
- Topic: what weird/quirky things do your teachers ask of you?
- Replies: 51
- Views: 22510
Re: what weird/quirky things do your teachers ask of you?
New teacher just asked me if we had any more warming plates. "Judging by your laughter I guess I got the name wrong", yes she wanted evaporating basins.
- 09 Nov 2021, 10:12
- Forum: Biology, Physics...
- Topic: plant adaptations
- Replies: 11
- Views: 4721
Re: plant adaptations
Thanks Merilyn1
- 09 Nov 2021, 09:56
- Forum: Miscellaneous
- Topic: Chair Damage
- Replies: 29
- Views: 8223
Re: Chair Damage
Thanks I had not heard of this.
- 09 Nov 2021, 09:53
- Forum: Chemistry and Labware - General
- Topic: mercury thermometers
- Replies: 11
- Views: 1994
Re: mercury thermometers
They are more accurate than alcohol ones. I have kept a few up to 200 degrees and the 0 to 50 degrees. I think we have many dangerous chemicals in our charge and correct handling and disposal is critical. If you want analytical, under supervision only thermometers, then correct storage in a containe...
- 03 Nov 2021, 10:54
- Forum: Safety with Chemicals
- Topic: Heart attack day
- Replies: 3
- Views: 3148
Re: Heart attack day
Well done! I was told by a virologist that unless we use blood agar we wont grow any viruses or animal diseases. But breathing in some of the bacteria and mould we grow cant be good.
- 26 Oct 2021, 09:28
- Forum: Biology, Physics...
- Topic: pssc optical slits kit
- Replies: 1
- Views: 3071
pssc optical slits kit
I have a PSSC No.23 optical slits kit, firstly what is it, secondly what should be in it? It is primitive, but a lot of physics kits are just odd bits.
- 26 Oct 2021, 09:24
- Forum: Chemistry and Labware - General
- Topic: how do you identify classroom glassware
- Replies: 12
- Views: 2686
Re: how do you identify classroom glassware
When we designed our new science space (with very limited room) we made stations with a sink 2 x bunsen outlets, power points and also terminals connected to my work spot, under their benches are cupboards with most of the equipment all classes would use. Expensive equipment must be requested. I als...
- 25 Aug 2021, 10:05
- Forum: Recipes and Pracs
- Topic: sherbet recipe
- Replies: 10
- Views: 3958
Re: sherbet recipe
We made this for science week. Just the basics and the kids loved it. They mixed it the bags to there was less mess.