CHAPTER 2: THE STRUCTURE OF THE ATOM

SPM QUESTIONS 2003 - 2010

OBJECTIVE QUESTION 1. Diagram 1 shows the symbol for a chlorine atom

37 Cl 17

Figure 1 Which of the following is true based on the symbol in Diagram 1?

Proton number Nucleon number Number of electrons

A 17 37 17

B 17 20 17

C 20 37 20

D 37 17 37 SPM 2003, NO 1

2. Diagram 3 shows a model of an atom

Diagram 3 Which of the following is true of the atomic model? I Proposed by Neil Bohr II Was built based on the existence of the neutron. III Shows that electrons move in shells around the nucleus. IV Discovered through the bombardment experiment of alpha particles on gold foil

A I and III only B II and IV only C I, II and III only D I, II, III and IV

SPM 2003, NO 1

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3. Diagram 6 shows the cooling curve for gas X Which of the following statements is true?

Diagram 6

A From 0 to t1 heat energy is absorbed B From t1 to t2 forces between particles overcome. C From t2 to t3 the kinetic energy of particles increased D From t3 to t4 the heat energy released is equal to the heat energy lost to the

surroundings. SPM 2003, NO 21

4. The diagram shows the change of state of matter.

Which of the following is process X? A Melting B Boiling C Freezing D Condensation

SPM 2004, NO 1

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5. The diagram shows the atomic symbol of element X.

23 11 X

Which of the following is true about the subatomic particles of element x?

Proton number Nucleon number Electron configuration A 11 23 2.8.1 B 11 23 2.8.8.5 C 23 11 2.8.1 D 23 11 2.8.8.5

SPM 2004, NO 21

6. The information shows the sub atomic particles of atom W.

Electron configuration 2.1 Number of protons 3 Number of neutrons 4

Which of the following diagrams shows an atom W?

SPM 2004, NO 24

7. The diagram shows a model of an atom.

Who introduced this model?

A Neils Bohr B John Dalton C James Chadwick D Ernest Rutherford

SPM 2005, NO 1

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8. The diagram shows an experiment to study the particle theory of matter.

Which of the following is the best explanation of the observation in the experiment? A. Agar dissolves copper (II) sulphate. B. Copper (II) sulphate is an ionic compound. C. Particles in copper (II) sulphate are minute and discrete. D. The attractive force between agar and copper (II) sulphate particles is strong.

SPM 2005, NO 21 9. The table shows information about two types of particle.

Particle Proton number Electron configuration X 9 2.8 Y 17 2.8.8

Based on the information in the table, both particles X and Y are

A inert gas B negative ions C atom of metal D isotopes of the same element

SPM 2005, NO 22 10. The table shows the number of electrons and neutrons for ions G2-, H+, L- and M2+.

These letters are not the actual symbols for the elements.

Ion Number of electron

Number of neutron

G2- 10 11 H+ 10 12 L- 18 18

M2+ 18 20

Which of the following shows the correct nucleon number of the ion?

Ion Nucleon Number A G2- 21 B H+ 21 C L- 35 D M2+ 36

SPM 2005, NO 41

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11. Which of the following set ups of the apparatus is correct to determine the melting point of acetamide?

SPM 2006 , NO 1

12. Which of the following is a use of carbon-14 isotope? A. Determine the age of the fossil B. Generate electrical energy C. Diagnose thyroid problems D. kill cancer cells.

SPM 2006, NO 2

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13. Which of the following electron arrangement has three valence electrons?

SPM 2006, NO 3 14. Diagram 1 shows the electron arrangement of an atom.

Diagram 1

Which of the following electron arrangement has the same number of valence electrons as the atom in Diagram 1?

SPM 2007, NO 1

15. Which of the following shows the correct type of particle for each substance?

Atom Molecule Ion A water Magnesium Sodium chloride B Magnesium Carbon dioxide Sodium chloride C Sodium chloride Carbon dioxide Magnesium D Magnesium Sodium chloride Carbon dioxide

SPM 2007, NO 2

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16. Which substance is element ? A Air

B Steam C Carbon D Naphthalena

SPM 2008 Q1

17. The following statements refer to the contribution of a scientist in the development of ideas about atomic structure.

Discovered proton Most of the mass of the atom is in the nucleus The electron move in the empty space

Who was the scientic? A Neil Bohr B John Dalton C J.J Thomson D Ernest Rutherford SPM 2008 Q23 18. Diagram shows the symbol for the element. X is not an actual symbol of element.

Which the following shows the electron arrangement and the number of neutron in the atom of X.

Electron Arrangements number of neutron A 2.8.1 11 B 2.8.2 11 C 2.8.1 12 D 2.8.2 12

SPM 2008 Q24

23 11 X

19. Diagram 3 show the electron arrangement of a beryllium atom

Which of the following is true about this atom? A The proton number is 2 B The nucleon number is 2 C The total number of electron is 4 D The number of valance electron is 4

SPM 2008 Q25

20. Which of the following particles contain 10 electron?

[ Proton number: Ne = 10, Na = 11, mg=12]

I Na II Ne III Na+ IV Mg 2+

A I,II and III B I,II and IV D I,III and IV D II,III and IV

SPM 2008 Q26 21. Table 2 shows the proton numbers of elements X and Y. X and Y are not actual symbols of the elements

Element Proton number X 11 Y 19

Which statements are true about element X and Y? I Atom X and Y have one valence electron

II Element X is more reactive than element Y III Atom X has bigger atomic size than atom Y IV Element X and Y are the same group in Periodic Table

A I and III B I and IV B II and III D II and IV

SPM 2008 Q 27 .

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22. Which of the following is use of cobalt-60 isotope?

A Treatment of cancer B Sterilizations of insects C X-ray for body examination D Dating the age of fossils and artifacts.

SPM 2009 Q5

23. Diagram 1 show the inter-convention of the states of matter of a substance.

Which of inter convention involves the release of energy?

A Steam Ice B Water Steam C Ice water D Ice Steam

SPM 2009 Q6 24. Which statement is true about the reaction of a magnesium fluoride? [ Proton number: F = 9, Mg = 12]

A One magnesium atom donates two electron to one fluorine atom. B One magnesium atom donates two electron to two fluorine atom. C One magnesium atom shares two electron to one fluorine atom. D One magnesium atom shares two electron to two fluorine atom

SPM 2009 Q16

25. Diagram shows the electron arrangement of an atom of Y Y is not actual symbol of the element

Which of the following, is the position of element Y in the periodic table?

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Group Period A 2 2 B 2 3 C 12 2 D 12 3

SPM 2009 Q20

26. The following statements are about diffusion.

The tiny particle are discrete The tiny particle are move randomly

Which are the following situations are explained by the statements above? I bromine gas mixing with air. II Aqueos copper(II) sulphate moving through a gel III Melting of lead bromide. IV Combustion of magnesium in the air.

A I and II B I and IV B II and III D III and IV

SPM 2009 Q22

27. Table shows the melting point and boiling point of four substances

Which substances is a liquid at room temperature?

A W B X C Y D Z

SPM 2009 Q 27

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28. Diagram shows the cooling curve of liquid Y

Which statement can be deduced from Diagram? A At t1 exist as solid B The freezing point of Y is 70oC C From t1 to t2, Y does not release heat energy. D From t to t , the particles are less closely packed 2 3

SPM 2009 Q32 29. Element G reacts with element L to form a covalent compound with the formula GL2 The electron arrangement of an atom of L is a possible electron arrangement of an atom of G.

A 2.8.1 B 2.8.2 C 2.8.4 D 2.8.6

SPM 2009 Q36 30. The relative molecular mass of M2(SO4)3 is 342

What is the relative atomic mass of element M ? [Relative atomic mass : O=16, S=32] A 27 B 54 C 118 D 123

SPM 2009 Q37

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31. What is the meaning of isotope?

A atoms of the same elements with the same nucleon number. B atoms of the same elements with the different number of nucleon. C atoms of the different elements with the different proton number. D atoms of the different elements with the same nucleon number.

SPM 2010 Q1

32. Solid X is heated in a boiling tube and the temperature is recorded at regular time

intervals if the melting point of X is 78oC, Which graph represent the heating curve of X?

SPM 2010 Q2

33. The proton number of atom R is 14 and its relative atomic mass is 28

Which statement is correct about R?

A The mass of an atom of R is 28 g B The molar mass of R is 28 g/mol C 14g of R contains 6.0 x 1023 atoms D Atom R has 14 protons, 14 electron and 28 neutron.

SPM 2010 Q3

34. Element J and element Q have proton number of 12 and 9 respectively. What is relative formula of a compound formed between J and Q? [ relative atomic mass: J=24; Q=19] A 30 B 43 C 62 D 67

SPM 2010 Q6

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MARK SCHEME

1 A 11 D 21 B 31 B 2 C 12 A 22 A 32 C 3 D 13 C 23 A 33 B 4 B 14 D 24 B 34 B 5 A 15 B 25 B 6 A 16 C 26 A 7 A 17 C 27 C 8 C 18 C 28 B 9 B 19 C 29 B 10 C 20 D 30 A

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