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

27 Manufactured Substances A The stage of the contact process are as follows;
in Industry Peringkat-peringkat bagi proses Sentuh adalah
seperti berikut:
+O 2 +O 2 + H 2 SO 4 +H 2 O
S  SO 2 SO 3  H 2S 2O 7  H 2SO 4

28 Manufactured Substances C  Steel: great formability and durability
in Industry Keluli: Kebolehtempaan dan kemampanan
yang baik
 Aluminium: Not easily corrode
Aluminium: Tidak mudah terkakis
 Titanium: Very high tensile
Titanium: Sangat tahan regangan
 Carbon fibre: Very light
Gentian karbon: Sangat ringan

29 Rate of reaction C Combustion is a reaction that occurs rapidly. Rusting,
respiration and photosynthesis are slow reactions.

Pembakaran merupakan tindak balas yang berlaku
dengan cepat. Pengaratan, respirasi dan fotosintesis
merupakan tindak balas yang perlahan.
30 Rate of reaction A Rate of reaction = volume of carbon dioxide gas/
time

Kadar tindak balas= isipadu gas karbon dioksida/
masa

31 Rate of reaction D Calcium carbonate powder have a larger total
exposed surface area than the large calcium
carbonate, thus the higher will be the rate of reaction.

Serbuk kalsium karbonat mempunyai jumlah luas
permukaan terdedah yang lebih besar daripada
ketulan kalsium karbonat, jadi kadar tindak balas
pun bertambah.

32 Rate of reaction C Average rate of reaction = Maximum volume/Time
taken
Purata kadar tindak balas= Isipadu maksimum/Masa
3
= 26.50 cm / 2.5 min
3
= 10.60 cm min -1

33 Carbon Compound B A saturated hydrocarbon has only single covalent
bonds between its carbon atoms. A hydrocarbon
contains hydrogen and carbon only.

Hidrokarbon tepu mempunyai ikatan kovalen
tunggal. Hidrokarbon mengandungi hidrogen dan
karbon sahaja.

Sektor Pembelajaran, Jabatan Pendidikan Negeri Sabah | 2020 197