Australia's Science Forum

Its not as easy as it sounds, I did it about 15 years ago and Im sure to resins have improved. there in a simple procedure on this site. Google, 'How to use epoxy resin in craft' But there is alot of sanding involved and polishing so you dont see the layers which it doesnt mention. Maybe the new epo...

You know when you feel that soapie feeling when to touch NaOH, dishwasher detergent/tabs etc.....thats the chemical reacting with the protein in your skin!!! 8O :w00t: Your eyes have heaps of protein...... you are so lucky!!!!!! I was making up solution once and got a big wiff..... i had to go outsi...

Firstly its a big no no.. to open the plates. ( unless you are culturing specific bacteria on certain media which we dont usually do at school). You dont know what your dealing with! :? You can view under the steroscope with it still sealed up. If you veiw the plate under a microscope you wont see a...

There is also a recipe in 'Chemisty Context 2'

Search: Examining Corrosion using Ferroxyl Gel

I use Smiley's recipe... has worked well.

Start storing all your flour, rice, pasta, seeds in the frig in BIG JARS! say you are getting stored product pest, beetles or weevils. The frig helps to stop that and slows the breeding down if you do have them... your saving the department money :wink2: As for dirty cups, next birthday buy him a pa...

You can also use filter paper over the top of the lamps if you need to defuse the light, I find it much more relaxing on the eyes.

wasnt sure if this should have gone into.... 'teachers behaving badly', 'avoiding accidents' but I thought id start a new and get some other peoples thoughts on this! Yesterday, I walked into a lab where Y7 are evaporating off soft drink in evaporating basins to help clean up. To my shock the studen...

Krysia,
Try,
-soak the dialysis tubing in some water so it can be easily opened
-tie one end off with cotton (sewing type)
- fill with sucrose solution
- then tie the top off with cotton.
Good luck, our students do all this themselves!

Hi Wendy
Just one thing to make your flow chart a bit more accurate, the heading should be just 'Insects' as bugs are a type of insect in entomological classification.
Nice job!

I agree with Judy!
We dont use these chemicals in schools
You cant change an alcohol to a halogen maybe extract a halogen.

I was hoping for a alternative to acid.

I remember reading it and thinking what a good idea.
(not nappysan).
But I could just be a little crazy Bring on the long weekend!

I have some glass bottles that contained NaOH 1M. Im having trouble cleaning them.

I do remember seeing this on a post before but cant seem to find it.

Unreal! :clap3: Most of these I have as well, just need to make up some starch. \:D/ Many thanks Wendy! Love those requests that have no concentrations and no amounts or volumes! Mind reader is not in our job description. One day I will give him 1ml instead on 1L! :crazy: then head off campus to do ...

Can any one tell me the concentrations of
AgNO3
Starch
Iodine solution required for this prac.

Teacher has written saturated NaCl so I know that one!

Check this site out

http://www.environment.nsw.gov.au/pesti ... cation.htm

Look in: Notification of pesticide use in sensitive places

Schools is no 1 on the list.

hope that helps the cause

Vic schools are the similar.

Sorry if this comes up twice

Pest control should only be done out of school hours, due to people who have chemical sensitivity and lung problems. Vapours & dusts can be airborn on windy days.

Smiley your correct! Im very busy, on my own first 2 terms and my emails are just 'wacked' out. Sorry if I was unclear! Yes, my stock bottles (x2) are giving low results. According to the charts on the stock bottle & supplier charts. I have decided to order another batch and see what happens, th...

I seal them with sticky tape and observe using a steroscope & hand lenses.
I learnt a lesson a few years ago with a boy whos trigger was mold and ended up having a Asthma attack in class!!
Highly likely there will be a mold there as well as S.marascens

THAT SHOULD READ pH9 BLUE