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SPM Chemistry A xplosive Module (Chemistry A Ticket For “U” ) GREEN ZONE [GZ]

(c) Based on cell II, state the observation for the reaction occurred at the zinc electrode.
Berdasarkan sel II, tulis pemerhatian bagi tindak balas yang berlaku pada elektrod zink.

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[1M]

(d) Compare the observation for the colour change of copper(II) chloride solution in cell I and
cell II.
Bandingkan pemerhatian terhadap perubahan warna pada larutan kuprum(II) klorida
dalam sel I dan sel II.

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[1M]

(e) Diagram 3.2 shows a heart pacemaker. A pacemaker is a small device that's placed under
the skin in your chest to help control your heartbeat. Heart pacemakers have successfully
prolonged the life of many patients with heart diseases. A heart pacemaker is made of a
pair of zinc and silver metal cell and function as chemical cell in the body.

Rajah 3.2 menunjukkan perentak jantung. Perentak jantung adalah alat kecil yang
diletakkan di bawah kulit di dada anda untuk membantu mengawal degupan jantung
anda. Perentak jantung telah berjaya memanjangkan hayat ramai pesakit jantung.
Perentak jantung diperbuat daripada sel pasangan logam zink dan argentum dan
berfungsi sebagai sel kimia dalam badan.

/ Perentak jantung

Diagram 3.2 / Rajah 3.2

Using same pair of metal as in a heart peacemakers and suitable electrolyte, draw an
apparatus set-up for the chemical cell in the laboratory. Label the negative and positive
terminal of the cell.

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