PRE PERCUBAAN KIMIA SPM 2020

1 The following statements refer to the contributions of a scientist in the development of the Periodic Table of Elements

Pernyataan berikut merujuk kepada sumbangan seorang ahli sains dalam membangunkan Jadual Berkala Unsur.

• Plotted the graph of the atomic volume against the atomic mass of the elements

Memplot graf isi padu atom melawan jisim atom bagi unsur-unsur

• Suggested that there is a periodic relationship of elements based on their relative atomic masses

Mencadangkan bahawa terdapat satu perhubungan berkala bagi unsur-unsur berdasarkan

jisim atom unsur

Who was the scientist?

Siapakah ahli sains itu?

• Johann W. Dobereiner

• John Newlands

• Henry Moseley

• Lothar Meyer

A covalent compound does not conduct electricity because

Sebatian kovalen tidak mengalirkan arus elektrik kerana

• it does not dissolve in water

  ia tidak larut dalam air

• it has strong covalent bonding

  ia mempunyai ikatan kovalen yang kuat

• particles consist of molecules

  zarah terdiri daripada molekul

• ions in the covalent compound are not mobile

  ion-ion dalam sebatian kovalen tidak bergerak bebas

1 mol of oxygen gas, O₂ and 1 mol of carbon dioxide gas, CO₂ have

1 mol gas oksigen, O₂ dan 1 mol gas karbon dioksida, CO₂ mempunyai

• same atom

  atom yang sama

• same mass

  jisim yang sama

• same number of atoms

  bilangan atom yang sama

• same number of molecules

  bilangan molekul yang sama

1               Which compound in the table below is correctly matched with its relative molecular mass? Sebatian yang manakah di dalam jadual di bawah dipadankan dengan betul dengan jisim molekul relatif masing-masing?
(RAM : H,1 ; C,12 ; N,14 ; O,16 ; Na, 23 ; P, 31 ; S, 32 ; Ca, 40 ; Fe, 56)

• I and III

• II and IV

• I,II and III

• I,III and IV

• A

• B

• C

• D

What are the major components used in the making of lead crystal glass?

Apakah komponen utama untuk pembuatan kaca Kristal plumbum?

• Copper(II) oxide and lead(II) oxide

  Kuprum(II) oksida dan plumbum(II) oksida

• Aluminium silicate and silicon dioxide

  Aluminium silikat dan silicon dioksida

• Silicon dioxide and lead(II) oxide

  Silikon dioksida dan plumbum(II) oksida

• Iron(III) oxide and boron oxide

  Ferum(III) oksida dan boron oksida

Which process has the lowest rate of reaction?

Proses manakah yang mempunyai kadar tindak balas yang paling rendah?

• Combustion/ Pembakaran

• Fermentation/Penapaian

• Respiration/respiras

• Photosynthesis/Fotosintesis

• A

• B

• C

• D

• Ethanol, C₂H₅OH/Etanol, C₂H₅OH

• Potassium iodide solution, KI

  Larutan kalium iodida, KI

• 1 ,1,1-trichloroethane, CH₃ CCl₃ /1,1,1-trikloroetana, CH₃Cl

• Ethyl ethanoate, CH₃COOC₂H_5/Etil etanoat, CH₃COOC₂H₅

• A

• B

• C

• D