Australia's Science Forum

I have some recently purchased universal indicator pH 3- pH11 double checked the bottle!! :? The solution is green pH7 colour according to the chart. When added to Tap water pH6 yellow Deionised water is pH6 yellow Sodium hydroxide wont go to pH11 purple but pH11 blue?? :oops: Can anyone explain or ...

Rowyrow, I have been recycling Copper Sulphate for the last 6 years and have never had to buy any....thus its very affordable. Any experiment that is done with CuSO4 is recollected and just reused. I collect the crystals (solids to make solution) & solutions to make the crystals. Most of the jun...

With insects once they are dry you cant 'pickle' them.
If they are pinned out then leave them that way as they are delicate
You can make a display board of inscect classification and then use them for Y7 'making a key', classification
Flys/beetles/butterfies etc.
Great for open days..'Bug Board'

After the sand paper if your block is still murky use, Bicarb, a drop of water & soft cloth then dry. Next, toothpaste, water and soft cloth.
You need to add muscle as well!
These are finer abrasives which help polish up the surface.

Your local Catholic High school will always have a RE department who is usually doing charity work for schools in the outback or OS. Ring their reception and they will point you in the right direction. I also so an add in the local paper, collecting books for Rowanda. Drop off was a local Church. Gr...

I suppose it was difficult to clean up so quietly because it is a HEAVY METAL.

Sorry, once lived in the 'gong' just had to add that!

I give mine to the district health nurse when they do the vaccination injections.

I have pitcher plants 'monkey cups' the live in a lab by the window which has a blind pulled down most of the time. Still going strong! I have it siting in a tray of disilled water which I allow to dry off for a few days then top it back up. I have never feed it and it grown like a weed and about 4y...

We dont lock anything here during the day! My teachers are great, the only one who sometimes helps himself is a chem teacher & I dont mind. Prep rooms are always unlocked, labs are unlocked but I do ask that the doors are closed after class. Chemical store is unlocked but door is closed. Student...

No, we dont use digital and I bought some from a supplier last year, the graduation was good but they where so fagile on the tip, lost heaps when they where just being placed on the desk... so I cant recommend them. :? Painting them doesnt work as the colours come off in the heat. So I would like so...

I have a phone in my main Prep but have chosen a Walkie Talkie system for the other prep & 2 labs at the other end of the school. When I open the labs in the morning I grab one WT and leave it in the main prep for the day and use it for a emergency or if something is needed. When I lock up in th...

I find a 30cm metal ruler cuts long neat sections

I dont think MSDS were around in Government store days, Im sure current ones are fine.

Maybe someone can tell us what year they started?

I pick off the main bits by hand or metal spatula then run them through the dishwasher.
It must be hot enough as it removes the residue, glassware is clean!

Try a key wings seen/or not, mouthpart types, antennae shape, plant/ground dwellers etc.

After questioning our Mr B found out he is not boiling with the air locks and straight tubes on, this could be our problem!
thanks Lada!

Thanks Liz, but we dont have an autoclave, so we sterilise then boil. Anyone out there do similar with good results?

We donot allow juniors to use scapels
BUT they use single sided rasor blades?????????

WHAT IS WORSE????

say no more

Help! Just finish this experiment and again it didnt work :crazy: I use the plastic airlocks but seem always to grow mold when Im not suppose too :? We sterilise using Miltons, broth is boiled for 10min but seem to still grow something!! does anyone have any FOOL (which is obviously me :-? ) proof m...

What does everyone do with burning of Mg ribbon?

I know that it gives off UV and may cause eye damage as per CSIS APPENDIX D but has anyone bought UV safety glasses or not?

Im intersted to know.