Throughout the lessons, everybody paid 100% attention. By the time they started working in groups, they started talking profesionally.
"use the coin as cathode"
"copper is connected to the positive terminal"
"Wow, teacher, come and have a look! Changes occur so fast!"
"TEAcheer, how does it happen?"
"The coin is so nice!!!!"
I really enjoyed the lesson especially looking them leaving the lab with happy smiling face! Hope everyone realise the importance of electrolysis in their daily life!
Chemical equation that shows the reaction occurs
at anode : Cu ---> Cu2+ + 2e-
at cathode : Cu2+ + 2e- --> Cu