Australia's Science Forum

We got some from Haines a while ago.

I doubt it's "cornflower". It may, however, be cornflour.

Oh they're for glass pipettes. Not for me then. Thanks anyway - and good to see you didn't just chuck them in the bin.

Are they for micropipettes? Sorry I can't open the attachment. Would love a few if so. Happy to pay postage.

What did you end up using?

Zinc oxide changes colour at around 8000 degrees Celsius, so if you can get that organised I'd be most impressed.

Used silica gel will change colour on heating. Hydrated CuSO4 will turn from blue to white on heating due to water loss. I can't think of something that will change back on cooling apart from thermochromic dyes which I'm pretty sure schools don't usually have on hand. Good luck!

From "The Laboratory". Dissolve 27.8g of iron(II) sulphate in distilled water containing 15mL of 0.1M H2SO4 and make up to 1L. This will give you a strength of 0.1M iron sulphate. Obviously just change the amount of iron sulphate for a different strength.

The gadget repair man we use reckons Motic are the best.

We got eyes from the abattoir delivered to our local butcher earlier this year. $5 freight. It sounds like we're lucky in that regard. Can't get fresh brains anymore though - we had to get preserved brains from Southern Biological.

Here's one that uses H2O2. Using stronger H2O2 results in a faster reaction. https://edu.rsc.org/experiments/iodine- ... 44.article

Check this out https://www.theguardian.com/australia-n ... dney-found
Some poor new labbie must have nearly had a heart attack.

We bought a distiller from the brewery shop, and it's more than paid for itself. Plus no packaging or plastic bottles or effort. Occasionally I rinse it with 5M HCl to descale it. 4L per cycle and auto -off. pH is quite low of course, but that doesn't really matter for our purposes.

They are recyclable. I keep mine for solution bottles.

It depends on what they want to do with the terrarium - will there be animals in there? This from google: https://www.google.com/search?q=terrarium+plants&rlz=1C1GCEU_enAU886AU886&oq=terrerium&aqs=chrome.2.69i57j0i10i433i512l3j0i10i512l6.8942j0j7&sourceid=chrome&ie=UTF-8&safe...

Wow. Dodgy as! Lucky you were onto them.

Totally. It was insane. Upside - no one got badly hurt and the kids love a good explosion. Downside - we were all shocked and went home thanking the gods of science for their mercy.

Yeah we had them in those clamps meant to stop the plunger coming out - the explosion bent the clamp! It was seriously full on.

Yes all ok, luckily. One kid had a bit of glass in his leg but it was pretty minor compared to how it could have been. The teacher was horrified and did most of the clean-up himself!

Clamped gas syringe connected to a clamped side-arm test tube with stopper. Reaction of 2M HCl and magnesium ribbon, measuring the amount of gas released when varying the amount of Mg. Teacher decides to do a pop test with around 60mL of H2 in the syringe. Syringe plunger is propelled at great speed...