[Erichsen]

Hello there

I just started 1 week ago as a chemistry teacher in Denmark (EU). I need some help to explain how some molecules dissociate completely while others stay intact (mostly dissolved).
I´ve heard an idea where u to pure water put some current and connect a lightball (dont know if thats the correct word ).
In pure water it wont light up.
In acetic acid half light
And water + NaCl full light.

How do I draw this electrical system?

Like this? (signature)

[DevaDevil]

if you connect it like this no light will shine as with salt water it will short-cut

here it is decently well shown how it works

[Erichsen]

Hmm short.cut you say, thats what i thought myself but wasnt sure. I dont really understand the picture you link too. What if I draw the picture like this? (new signature) That might work right?

[DevaDevil]

yes, that is a proper circuit

the picture I link to is seen more specifically on the second page (click the green next button) It is an explanation of about the same experiment you describe

[Erichsen]

Oh sry didnt see the next page
At least I came to same circuit as the link describe. Thank you for helping me out. I really appreciate it.