Page 204 - MODUL KIMIA A+XPLOSIVE SPM (LATEST)

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SPM Chemistry A xplosive Module (Chemistry A Ticket For “U”) ANSWERS

(b) (i) Sodium moves fast on water// Sodium burns with a yellow flame 1
Natrium bergerak laju di atas air // Natrium terbakar dengan nyalaan
kuning
(ii) Potassium is more reactive than sodium 1
Kalium lebih reaktif daripada natrium

(iii) P1 – Atomic size of potassium is bigger than sodium/ saiz atom kalium 3
lebih besar daripada natrium
P2 – Attraction force between nucleus and electron of potassium is
weaker than sodium.
Daya tarikan antara nukleus dan elektron atom kalium lebih lemah
berbanding atom natrium
P3 – Potassium atom is easier to donate electron compared to sodium
atom/ Atom kalium lebih senang membebaskan electron berbanding atom
natrium
10 marks
3. (i) Q and R 1
(ii) * at least one correct arrow and on the wire 1

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(iii) Pb , I - 1
(iv) Purple gas is released/ Gas ungu dibebaskan 1
2+
(v) Pb + 2e  Pb 1
(b) (i) Chlorine gas// Cl 2 1
(ii) P1 - Place near a burning/ lighted wooden splinter in the mouth of the test 2
tube with collected gas
Dekatkan kayu uji bernyala pada mulut tabung uji yang dipenuhi gas
terkumpul
P2 – “Pop” sound is heard
Bunyi “Pop” kedengaran
(iii) Reduction // Penurunan 1
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(iv) H ion accepts electron to form hydrogen molecule 1
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H ion terima elektron untuk membentuk molekul hidrogen
10 marks

Sektor Pembelajaran, Jabatan Pendidikan Negeri Sabah | 2020 203