Search found 35 matches

by Shell1
10 Sep 2020, 12:45
Forum: Sourcing Materials & Eq Repairs
Topic: Rock and mineral specimens
Replies: 7
Views: 3547

Re: Rock and mineral specimens

Hi
We went to a landscape supplier in our area and they were happy to supply us with some granite, limestone, basalt, scoria and sandstone samples.
by Shell1
26 Jun 2020, 10:26
Forum: Recipes and Pracs
Topic: Silver powder recovered from metal displacement reaction
Replies: 2
Views: 2073

Silver powder recovered from metal displacement reaction

Hi All
We have just done a metal displacement experiment with Yr 11 chemistry. I have recovered a whole lot of silver power and have dried it out. Is there an easy and safe way to heat the silver powder to create a solid silver bar or nugget?
Thanks in advance
Shell
by Shell1
22 Jun 2020, 11:52
Forum: Recipes and Pracs
Topic: blood- splatter and skin safe
Replies: 4
Views: 3075

Re: blood- splatter and skin safe

Try steve spangler science as he has a few good recipes
by Shell1
27 Feb 2020, 13:58
Forum: Sourcing Materials & Eq Repairs
Topic: Bovine eyes
Replies: 11
Views: 7933

Re: Bovine eyes

I buy all my dissection specimens from dissection connection. Bovine eyes I have never had an issue with, nor has any Teacher complained about cloudy lenses. They are vac packed pretty much straight away then frozen. I used to buy fresh from the butcher but every time I went to pick them up they had...
by Shell1
13 Nov 2019, 12:48
Forum: Biology, Physics...
Topic: Bell in a vacuum
Replies: 9
Views: 8157

Re: Bell in a vacuum

We just use an old style alarm clock, the one with the 2 bells on top. Most department stores sell them. https://www.google.com/search?q=alarm+clock+with+bells+on+top&safe=strict&rlz=1C1CHZL_enAU690AU690&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjl9Z2slOblAhWVbisKHcCECBAQ_AUIEigB&...
by Shell1
03 Sep 2019, 10:43
Forum: Jobs Forum
Topic: Jobs part time or full time or looking for work
Replies: 33
Views: 33636

Re: Jobs part time or full time or looking for work

If anyone is looking for some part time work please contact Robert Capizzi. Details below
Capture.PNG
by Shell1
15 Aug 2019, 14:56
Forum: Free classifieds - 4 sale/swap/wanted/giveaway
Topic: Stick Insect eggs
Replies: 20
Views: 14850

Re: Stick Insect eggs

Hi Macca
Sent you a PM
by Shell1
08 Aug 2019, 12:38
Forum: Sourcing Materials & Eq Repairs
Topic: Potassium permanganate crystals
Replies: 4
Views: 4887

Re: Potassium permanganate crystals

Chemist warehouse usually stock this
by Shell1
06 Jun 2019, 15:09
Forum: Recipes and Pracs
Topic: reproduction prac
Replies: 2
Views: 4570

Re: reproduction prac

Try dissecting a cherry tomato. See the image in the link below (scroll halfway down). Good for ovary etc
http://www.geochembio.com/biology/organisms/tomato/
by Shell1
16 May 2019, 14:44
Forum: Free classifieds - 4 sale/swap/wanted/giveaway
Topic: Marine Science Textbooks
Replies: 1
Views: 4941

Re: Marine Science Textbooks

Hi Rosemary
I sent you a pm. We have a marine science class so would be interested to see what resources you are giving away.
Michelle
by Shell1
03 Oct 2018, 10:27
Forum: Announcements
Topic: Welcome back everyone to chemtalk
Replies: 26
Views: 18610

Re: Welcome back everyone to chemtalk

Hooray. g
Great to have this site up and running again. Thanks Westlab
by Shell1
13 Jun 2018, 11:52
Forum: Chemistry and Labware - General
Topic: Dehydration of sugar using sulfuric acid
Replies: 23
Views: 14058

Re: Dehydration of sugar using sulfuric acid

I do ours in a tall beaker inside the fume hood. I think we only use about 20g sugar and about 50ml of sulphuric acid. the trick is to stir vigorously, you will feel the beaker start to heat up. we keep stirring until it is rather warm and then leave it. you will see it start to steam a bit and then...
by Shell1
14 Feb 2018, 13:56
Forum: Chemistry and Labware - General
Topic: Phenolphalein
Replies: 3
Views: 3830

Re: Phenolphalein

Recipe we use is dissolve 2 gm phenolphthalein in 600ml ethanol. make up to 1L with distilled water. Filter.
Students get a dropper bottle of this solution which is safe for use 7-12
by Shell1
07 Dec 2017, 09:37
Forum: Biology, Physics...
Topic: Preserved Animals
Replies: 10
Views: 7668

Re: Preserved Animals

We bought 10 cases of these from Haines. The kids love them.
https://www.chemtalk.com.au/viewtopic.php?f=26&t=451/index.php/ani ... imens.html
by Shell1
07 Dec 2017, 09:32
Forum: Recipes and Pracs
Topic: lolly chromatography
Replies: 7
Views: 5323

Re: lolly chromatography

M&M's much better than smarties
by Shell1
07 Nov 2017, 13:15
Forum: Safety with Chemicals
Topic: When does a risk assessment need to be done?
Replies: 26
Views: 13385

Re: When does a risk assessment need to be done?

I always tell my teachers no risk assessment = no prac. It didn't take them long to realize that I meant it. It helps also to have a coordinator that is on board and backs you up. I also stated the personal and school fines that could be imposed on them if there was an accident. Don't have any probl...
by Shell1
16 Oct 2017, 13:59
Forum: Safety with Chemicals
Topic: Aprons or Lab coats
Replies: 10
Views: 5251

Re: Aprons or Lab coats

Hi Elizabeth
We have lab coats and a great lab coat rack bought from Westlab. Things you may need to consider are: if you buy cotton do you have access to a washing machine/dryer at school? Rubber ones you could at least wipe down after dissections.
Shell
by Shell1
16 Oct 2017, 11:39
Forum: Safety with Chemicals
Topic: Chemical Stocktake in a Catholic School
Replies: 5
Views: 3573

Re: Chemical Stocktake in a Catholic School

I work in a catholic school and we have to do our stock take on chemwatch. I have all chemicals (haz and non haz) on the chemwatch manifest so I can print it out and then physically take the list to the chemstore to do the stock take. I don't have any of my made solutions or dropper bottles on this ...