Page 47 - MODUL KIMIA A+XPLOSIVE SPM (LATEST)

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SPM Chemistry A xplosive Module (Chemistry A Ticket For “U”) RED ZONE [RZ]

Paper 3 / Kertas 3
1 hour 30 minutes / 1 jam 30 minit

Answer all questions
Jawab semua soalan

1. An experiment is carried out to determine the freezing point of naphthalene. Solid
naphthalene is heated in a water bath until it melts completely. The initial
temperature is recorded. Then molten naphthalene is left to cool. The temperature
reading is recorded every 30 seconds. Diagram 1 shows the recorded thermometer
readings at 30 seconds intervals.

Satu eksperimen dijalankan untuk menentukan takat beku naftalena. Pepejal
naftalena dipanaskan di dalam kukusan air sehingga melebur sepenuhnya. Suhu
awal direkodkan dan leburan naftalena dibiarkan menyejuk. Bacaan suhu
direkodkan setiap sela masa 30 saat. Rajah 1 menunjukkan bacaan thermometer
yang direkodkan pada sela masa 30 saat.

Initial temperature: Temperatura at: Temperature at: Temperature at:
Suhu awal: Suhu pada: Suhu pada: Suhu pada:
__________ 30s________ 60s________ 90s__________

Sektor Pembelajaran, Jabatan Pendidikan Negeri Sabah | 2020 46