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[S2] Term 1 Week 11 March Holiday (16-22 Mar) Updates/Debrief

[S2 Maths + Science PMCians]

What we did in 2 hours:

This week, we continued with our second Science lesson on Chemical Changes.

 

We learnt about chemical changes using electricity, such as electrolysis (breaking down of ionic compound using electric current) and eletroplating (coating a key with a layer of metal). We also learnt about rusting, an oxidation process which requires the presence of oxygen and water. Finally, we learnt about acids & alkalis and the indicators used to test the pH of an aqueous solution.

What you take home:

Here are a few videos related to what we covered in our lesson.

 

Electroplating a key with copper

https://www.youtube.com/watch?v=FnJ0V7B7nKo  

 

Electrolysis of water

https://www.youtube.com/watch?v=HQ9Fhd7P_HA  

 

Testing for hydrogen gas

https://www.youtube.com/watch?v=IfO0lPhcBFQ 

 

Testing for oxygen gas

https://www.youtube.com/watch?v=UkADcJcPhuE  

Special Mention:

We will complete the chemical changes on acids & alkalis and wrap up our last Science lesson on Chemical Changes next week.

Thank you. 🙂  

 

Your friendly tutors,

Dr Lim & the S2MA+SCI Team

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