K1-002 KIMIA KERTAS 1 SPM, MODUL JSU N9

Jisim bagi dua atom unsur X adalah sama dengan jisim empat atom karbon. Apakah jisim atom relatif bagi unsur X? X bukan simbol sebenar bagi unsur itu. [Jisim atom relatif: C = 12]

The mass of two atoms of element X is equal to the mass of four carbon atoms What is the relative atomic mass of element X? X is not the actual symbol of the element. [Relative atomic mass: C = 12]

• 48

• 24

• 12

• 16

Rajah 7 menunjukkan struktur aspirin. Apakah formula molekul bagi aspirin?

Diagram 7 shows the structure of aspirin. What is the molecular formula of aspirin?

• CHO

• C₉H₉O₂

• C₉H₂O

• C₉H₈O₄

Formula molekul bagi garam karbonat Q ialah QCO3. Apakah formula molekul bagi garam nitrat Q?

A metal Q forms carbonate and nitrate salt. The molecular formula of the carbonate salt of Q is QCO₃. What is the molecular formula of the nitrate salt of Q?

• Q(NO₃)₂

• Q₂NO₃

• QNO₃

• Q₃(NO₃)₂

Antara yang berikut, formula kimia manakah dinamakan dengan betul berdasarkan sistem penamaan IUPAC?

Which of the following chemical formula is correctly named according to the IUPAC nomenclature system?

• A

• B

• C

• D

Formula bagi kalium heksasianoferat(II) diberi sebagai K_yFe(CN)₆. Jisim formula relatif sebatian ini ialah 368. Apakah nilai y?

[Jisim atom relatif: C = 12, N = 14, K = 39, Fe = 56]

The formula for potassium hexacyanoferreate(II) is given as K_yFe(CN)₆. Its relative formula mass is 368. What is the value of y?

[Relative atomic mass: C = 12, N = 14, K = 39, Fe = 56]

• 2

• 3

• 4

• 5

Antara yang berikut, langkah manakah yang betul untuk memastikan pita magnesium
terbakar dengan lengkap semasa melakukan eksperimen menentukan formula
empiriknya?

Which of the following is the correct step to ensure that the magnesium ribbon burns completely when conducting an experiment to determine its empirical formula?

• Buka penutup mangkuk pijar sekali sekala semasa pemanasan

  Raise the crucible lid once in a while during heating

• Panaskan pita magnesium itu dengan kuat dalam mangkuk pijar tanpa penutupnya

  Heat the magnesium ribbon strongly in the crucible without its lid

• Tutup mangkuk pijar dengan penutupnya setelah pita magnesium mula terbakar

  Close the crucible with its lid as soon as the magnesium ribbon starts burning

• Ulang proses pemanasan, penyejukan, dan penimbangan sehingga peroleh jisim yang tetap

  Repeat the process of heating, cooling and weighing until obtained a constant mass

Penguraian plumbum(II) nitrat menghasilkan plumbum(II) oksida, nitrogen dioksida dan oksigen. Antara yang berikut, persamaan kimia manakah yang seimbang bagi tindak balas tersebut?

Decomposition of lead(II) nitrate produces lead(II) oxide, nitrogen dioxide and oxygen. Which of the following chemical equation is balanced for the reaction?

• Pb(NO₃)₂ → PbO₂ + 2NO + O₂

• Pb(NO₃)₂ → PbO + 2NO + O₃

• 2Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂

• 3Pb(NO₃)₂ → 3PbO + 6NO₂ + O₃

Persamaan berikut mewakili satu tindak balas kimia. Antara yang berikut, penyataan manakah betul bagi tindak balas tersebut?

The following equation represents a chemical reaction. Which of the following statements is correct about the reaction?

• Hasil tindak balas ialah mendakan kalsium karbonat dan larutan natrium klorida

  The products are calcium carbonate precipitate and sodium chloride solution

  
  

• Dua mol natrium karbonat bertindak balas dengan satu mol kalsium klorida

  Two moles of sodium carbonate react with one mole of calcium chloride

  
  

• Bahan tindak balas ialah pepejal natrium karbonat dan larutan kalsium klorida

  The reactants are solid sodium carbonate and calcium chloride solution

  
  

• Dua mol kalsium karbonat dan satu mol natrium klorida terbentu

  Two moles of calcium carbonate and one mole of sodium chloride are formed

  
  

Tindak balas antara aluminium dengan ferum(III) oksida menghasilkan ferum dan bahan X. Apakah formula bagi bahan X?

The reaction between aluminium and iron(III) oxide produce iron and substance X. What is the chemical formula of X?

• AlO

• Al₂O₃

• AlO₂

• Al₃O₂

Maklumat berikut mengenai sejarah perkembangan Jadual Berkala Unsur. Siapakah saintis yang terlibat?

The following information pertains to the historical development of the Periodic Table of Elements. Which scientists were involved?

• Lothar Meyer

• Johann W.Dobereiner

• Dmitri Mendeleev

• John Newlands