Australia's Science Forum

Could other labbies please let me know what molarity of lead nitrate they use for Yr 7-10?

We don't use Cobalt (in any form) at all anymore, I've removed it all due to it's environmental and health affects. Asked people to find alternatives and surprisingly when you ask them to find a less nasty chemical they always do. Just have to push them out of their old ways. I Hi Anna What do you ...

All my solutions of potassium iodide have turned yellow.
Can I still use them or do I need to make new solutions.

Hi Everyone I am having trouble making Litmus Solution. I have tried 2 recipes. One says to add 10g of Litmus, boil then filter. The filtering takes a long time. The other says to add 5g and stand for 24hrs then add 2 drops of Sodium Hydroxide. After I make the solution it is a nice purple colour bu...

Can years 7-10 use 0.1m barium nitrate? The CSIS information is not clear.

Does anyone know where I can buy some samples of banded iron?