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Table 2 shows the time taken for the metal powder \(\mathrm{P}, \mathrm{Q}\) and \(\mathrm{R}\) of the same mass to dissolve in dilute nitric acid.
Jadual 2 menunjukkan masa yang diambil bagi serbuk \(\operatorname{logam} \mathrm{P}, \mathrm{Q}\) dan \(\mathrm{R}\) dengan jisim yang sama untuk melarut dalam asid nitrik cair.
\[
\begin{array}{|l|c|c|c|}
\hline \begin{array}{l}
\text { Metal } \\
\text { Logam }
\end{array} & \mathrm{P} & \mathrm{Q} & \mathrm{R} \\
\hline \begin{array}{l}
\text { Time (s) } \\
\text { Masa (s) }
\end{array} & 25 & 15 & 40 \\
\hline
\end{array}
\]
What are metals \(\mathrm{P}, \mathrm{Q}\) and \(\mathrm{R}\) ?
Apakah \(\operatorname{logam~} \mathrm{P}, \mathrm{Q}\) dan \(\mathrm{R}\) ?
Diagram 2 shows the apparatus set-up to study the reactivity of a metal with oxygen. The colour of the product formed is yellow when hot and white when cold.
Rajah 2 menunjukkan susunan radas untuk mengkaji kereaktifan suatu logam dengan oksigen.
Warna hasil yang terbentuk adalah kuning apabila panas dan putih apabila sejuk.
What is the metal?
Apakah logam itu?
Which metals can displace lead from lead(II) nitrate solution?
Logam manakah yang boleh menyesar plumbum daripada larutan plumbum(II) nitrat?
I Zinc. Zink
II Silver. Argentum
III Copper. Kuprum
IV Aluminium. Aluminium
Metals are extracted from their ores.
What is the name of the ores that contain \(\mathrm{Fe}_2 \mathrm{O}_3\) as the main mineral?
Logam diekstrakkan daripada bijih.
Apakah nama bijih yang mengandungi \(\mathrm{Fe}_2 \mathrm{O}_3\) sebagai mineral utama?
Table 3 shows information about three chemical cells.
Jadual 3 menunjukkan maklumat tentang tiga sel kimia.
\[
\begin{array}{|c|c|c|c|}
\hline \begin{array}{c}
\text { Chemical } \\
\text { cell } \\
\text { Sel kimia }
\end{array} & \begin{array}{c}
\text { Pair of } \\
\text { electrodes } \\
\text { Pasangan } \\
\text { elektrod }
\end{array} & \begin{array}{c}
\text { Voltage } \\
\text { (V) } \\
\text { Voltan } \\
\text { (V) }
\end{array} & \begin{array}{c}
\text { Positive } \\
\text { terminal } \\
\text { Terminal positif }
\end{array} \\
\hline \text { I } & \begin{array}{c}
\text { Y and Z } \\
\text { Y dan Z }
\end{array} & 0.7 & \text { Z } \\
\hline \text { II } & \begin{array}{c}
\text { Z and E } \\
\text { Z dan E }
\end{array} & 1.2 & \text { E } \\
\hline \text { III } & \begin{array}{c}
\text { E and X } \\
\text { E dan X }
\end{array} & 1.4 & \text { E } \\
\hline
\end{array}
\]
Which is the correct arrangement in ascending order of the metals in tendency to donate electrons?
Susunan logam secara menaik yang manakah betul bagi kecenderungan untuk menderma elektron?
The following information shows the arrangement of some metals in the reactivity series.
Maklumat berikut menunjukkan susunan beberapa logam dalam siri kereaktifan.
What are \(\mathrm{R}\) and \(\mathrm{L}\) ?
Apakah \(\mathrm{R}\) dan \(\mathrm{L}\)?
What is the position of hydrogen ion in the electrochemical series?
Apakah kedudukan ion hidrogen dalam siri elektrokimia?
Diagram 5 shows an observation when lead strip reacts with hydrochloric acid, bubbles of gas are produced.
Rajah 5 menunjukkan satu pemerhatian apabila kepingan plumbum bertindak balas dengan asid hidroklorik, gelembung gas dihasilkan.
Which metal is suitable to replace lead to produce the least gas bubbles?
Logam manakah yang sesuai bagi menggantikan plumbum untuk menghasilkan gelembung gas yang paling sedikit?
In the thermite reaction, aluminium is heated with iron (II) oxide to produce vigorous reaction and high heat energy to melt the iron. The molten iron can be used to fix the damaged railway track.
The following equation represents the reaction:
\[
2 \mathrm{Al}+\mathrm{Fe}_2 \mathrm{O}_3 \longrightarrow 2 \mathrm{Fe}+\mathrm{Al}_2 \mathrm{O}_3 \Delta \mathrm{H}=-3.98 \mathrm{~kJ} \mathrm{~g}^{-1}
\]
Dalam tindak balas termit, aluminium dipanaskan dengan ferum (II) oksida untuk menghasilkan tindak balas yang sangat cergas dan tenaga haba yang tinggi untuk meleburkan ferum. Leburan ferum boleh digunakan untuk memperbaiki landasan kereta api yang rosak.
Persamaan berikut mewakili tindak balas tersebut:
\[
2 \mathrm{Al}+\mathrm{Fe}_2 \mathrm{O}_3 \longrightarrow 2 \mathrm{Fe}+\mathrm{Al}_2 \mathrm{O}_3 \quad \Delta \mathrm{H}=-3.98 \mathrm{~kJ} \mathrm{~g}^{-1}
\]
What should be done to obtain a reaction which releases more heat?
Apakah yang patut dilakukan untuk memperoleh tindak balas yang membebaskan haba yang lebih tinggi?
The position of carbon in the Reactivity Series of Metal is between
Kedudukan karbon dalam Siri Kereaktifan Logam adalah di antara
Which metal can be extracted from its ores by electrolysis process?
Logam manakah yang boleh diekstrak daripada bijihnya melalui proses elektrolisis?
The following equation shows the change of bauxite to molten Y.
Persamaan berikut menunjukkan perubahan bauksit kepada leburan Y.
What is the main composition of bauxite?
Apakah komposisi utama bagi bauksit?
The following equation shows the change of bauxite to molten Y.
Persamaan berikut menunjukkan perubahan bauksit kepada leburan Y.
What is process X ?
Apakah proses X?
Diagram 8 shows four test tubes that contain different metals immersed in water.
Rajah 8 menunjukkan empat tabung uji yang mengandungi logam yang berbeza direndam di dalam air:
Which metal is the slowest to corrode?
Logam manakah yang paling lambat terkakis?