Combined Science Practical (Phy/Chem) 2013

ConcernedStudentlasia

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Hey Sec4/5 students who did Practical yesterday. Just wanted to discuss answer so pls dun flame me..
For Physics, the experiment was damn unpredictable. My sch bet on Electricity but Waves came out. Honestly, the experiment was damn fun. My gradient was 81.3 and speed was 600. In my sch, many of us got 80+ for gradient and 500+ for speed. What did your friends get?
For Chem, I seriously found it easy but not getting my hopes too high just yet. I concluded Acid Y was Sulfuric Acid and the Ions present were Copper(ll) and Carbonate ions. However, I forgot to write about the colour change when I added Acid Y to Residue X. It was blue right? The other parts were same as my teacher's answer. What are your opinions? Cheers :)
 
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