So disapointed...

with the Sec 4s and their Common Test results. MSG of 5.5? Serious? Is that with or without any effort?

mrguay's video - crystallization of copper (II) sulphate crystals

You might wonder why a Physics teacher is doing crystallization? That's because I'm teaching 4 NT this year and they are doing Chemistry this semester.

Chemistry is indeed a more interesting subject than Physics. However, it's really too complicated to explain anything fully.



If you're interested to try this, you can use common salt or sugar to do crystallization in your kitchen as well!