Chemistry Lab

Overall good . But in challenge quiz 67 is glitched , you need na2o but for that you need to make one but making it is impossible. I have tried everything. So I have to put an halt to the challanges due to this . Uninstalled and reinstalled but that didn't fix anything

Couldn't even do one thing in this game. So many things are locked that the free version is unplayable. After searching one thing, every unlocked element disappeared. I could only access H2O no matter what I tried to do.

I like the app a lot but there is one thing that needs fixing. Some challenges do not accept the result unless I do it according to the hint's directions. Please fix this.