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

D

13 Diagram 5 shows a part of the Periodic Table of elements.
Rajah 5 menunjukkan sebahagian daripada Jadual Berkala Unsur.

Diagram 5 / Rajah 5

Which of the following elements W, X, Y and Z in the Periodic Table of Elements is
suitable to be used in a scuba diving tank?
Antara unsur W, X, Y dan Z dalam Jadual Berkala Unsur, yang manakah digunakan
dalam tangki penyelam skuba?
A W C Y
B X D Z

14 Table 2 shows the information of three voltaic cells.
Jadual 2 menunjukkan maklumat bagi tiga sel voltan.

Potential
Voltaic cell Electrodes difference/V Negative terminal
Sel voltan Elektrod Terminal negatif
Beza keupayaan/V
Zinc and magnesium Magnesium
X 1.6
Zink dan magnesium Magnesium

Iron and zinc Zinc
Y 0.2
Besi dan zink Zink

Copper and magnesium Magnesium
Z 2.6
Kuprum dan magnesium Magnesium

Table 2 / Jadual 2

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