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Atomic Structure and the Periodic Table · CAPE Chemistry Unit 1

77 past-paper questions on Atomic Structure and the Periodic Table, part of Fundamentals in Chemistry, from every CAPE Chemistry Unit 1 paper on Quelpr.

Practise Atomic Structure and the Periodic Table
  1. 7(a)4 marks· CAPE Chemistry Unit 1 · 2005 · Paper 1Briefly explain how vaporization, ionization, separation, and detection of a sample are achieved in a mass spectrometer.
  2. 7(b)(i)2 marks· CAPE Chemistry Unit 1 · 2005 · Paper 1Give the m/z values of the molecular ion peak and the peak representing the most stable fragment in the spectrum.
  3. 7(b)(ii)3 marks· CAPE Chemistry Unit 1 · 2005 · Paper 1Suggest possible structures for the fragments with m/z values of 29, 57, and 59.
  4. 7(b)(iii)1 mark· CAPE Chemistry Unit 1 · 2005 · Paper 1Deduce the structure of the product of the reaction described.
  5. 1(a)(i)1 mark· CAPE Chemistry Unit 1 · 2021 · Paper 2Define the term 'radioactive isotope'.
  6. 1(a)(ii)2 marks· CAPE Chemistry Unit 1 · 2021 · Paper 2Give the names and symbols for TWO other forms of radioactive emissions.
  7. 1(a)(iii)3 marks· CAPE Chemistry Unit 1 · 2021 · Paper 2List THREE uses of radioactive isotopes.
  8. 1(a)(iv)2 marks· CAPE Chemistry Unit 1 · 2021 · Paper 2Determine the value of A and Z in the equation: ^{241}_{95}\text{Am} \rightarrow \text{ }^{A}_{Z}\text{Np} + \text{ }^{4}_{2}\text{He} + \text{energy}
  9. 1(b)2 marks· CAPE Chemistry Unit 1 · 2021 · Paper 2The element rhenium consists of two isotopes ^{185}\text{Re} and ^{187}\text{Re}, in the atomic ratio of 2:3. Calculate the relative atomic mass of rhenium to three significant figures.
  10. 1(a)(i)3 marks· CAPE Chemistry Unit 1 · May/June 2019 · Paper 2Explain how the atomic emission spectrum of hydrogen is produced.
  11. 1(a)(ii)1 mark· CAPE Chemistry Unit 1 · May/June 2019 · Paper 2Identify the series of lines in Figure 1.
  12. 1(a)(iii)4 marks· CAPE Chemistry Unit 1 · May/June 2019 · Paper 2Assess how the series of lines in Figure 1 provides evidence for discrete energy levels in hydrogen.
  13. 1(a)(iv)4 marks· CAPE Chemistry Unit 1 · May/June 2019 · Paper 2In Figure 2, draw the electron transitions occurring between energy levels associated with the origin of the lines in the visible region of the hydrogen spectrum.
  14. 1(b)(i)1 mark· CAPE Chemistry Unit 1 · May/June 2019 · Paper 2Write the electronic configuration of oxygen in its ground state using s, p notation.
  15. 1(b)(ii)2 marks· CAPE Chemistry Unit 1 · May/June 2019 · Paper 2Draw the shapes of the s and p orbitals.
  16. 1(a)4 marks· CAPE Chemistry Unit 1 · May/June 2022 · Paper 2Complete Table 1 by filling in the blanks for the relative mass, relative charge, or location of electron, proton, and neutron labeled (i), (ii), (iii), and (iv).
  17. 1(b)2 marks· CAPE Chemistry Unit 1 · May/June 2022 · Paper 2Describe the evidence that disproved Dalton's postulate stating that 'Atoms of the same element are identical in mass and properties', and state the modifications made to this postulate.
  18. 1(c)(i)2 marks· CAPE Chemistry Unit 1 · May/June 2022 · Paper 2Define the term 'relative atomic mass'.
  19. 1(c)(ii)2 marks· CAPE Chemistry Unit 1 · May/June 2022 · Paper 2Calculate the relative atomic mass of neon containing 90.9% 20Ne, 0.3% 21Ne, and 8.8% 22Ne.
  20. 1(d)(i)1 mark· CAPE Chemistry Unit 1 · May/June 2022 · Paper 2Write the s, p electronic configuration of the oxygen atom in its ground state.
  21. 1(a)1 mark· CAPE Chemistry Unit 1 · May/June 2024 · Paper 2Name the series of lines produced by these electron transitions.
  22. 1(b)2 marks· CAPE Chemistry Unit 1 · May/June 2024 · Paper 2Draw diagrams (including the axes) to show the shapes of the s and p orbitals.
  23. 1(a)(i)2 marks· CAPE Chemistry Unit 1 · May/June 2025 · Paper 2State TWO factors which influence the values of the first ionization energy.
  24. 1(a)(ii)4 marks· CAPE Chemistry Unit 1 · May/June 2025 · Paper 2Explain how the ionization energy data provides evidence for the idea of subshells, using appropriate elements from the sketch in Figure 1.
  25. 1(b)(i)1 mark· CAPE Chemistry Unit 1 · May/June 2025 · Paper 2Complete Table 1 by calculating the values of Log10 IE (Ionization Energy).
  26. 1(b)(ii)2 marks· CAPE Chemistry Unit 1 · May/June 2025 · Paper 2Use the data in Table 1 to plot a graph on page 7, of Log10 IE (Ionization Energy) against number of electrons removed. The first point has been plotted in Figure 2.
  27. 1(b)(iii)3 marks· CAPE Chemistry Unit 1 · May/June 2025 · Paper 2Explain the shape of the graph.
  28. 1(b)(iv)1 mark· CAPE Chemistry Unit 1 · May/June 2025 · Paper 2State the electronic configuration of Element D, based on the shape of the graph.
  29. 1(a)(i)1 mark· CAPE Chemistry Unit 1 · May/June 2026 · Paper 2Define mass number.
  30. 1(a)(ii)1 mark· CAPE Chemistry Unit 1 · May/June 2026 · Paper 2Define isotopes.
  31. 1(b)3 marks· CAPE Chemistry Unit 1 · May/June 2026 · Paper 2Element X has five naturally occurring isotopes as given in Table 1. Calculate the relative atomic mass of Element X.
  32. 1(d)(ii)2 marks· CAPE Chemistry Unit 1 · May/June 2026 · Paper 2State TWO postulates of Dalton's atomic theory that are highlighted by the reaction and associated calculations in (d)(i).
  33. 11 mark· Chemistry · Unit 1 Q1 1Which of the following statements is NOT a part of Dalton's atomic theory?
  34. 11 mark· Chemistry · Unit 1 Q1 1Which of the following statements is NOT a part of Dalton's atomic theory?
  35. 1(a)2 marks· Chemistry · Unit 1 Q1 1(a)Calculate the relative atomic mass Aᵣ of titanium.
  36. 1(a)2 marks· Chemistry · Unit 1 Q1 1(a)Define the term 'relative atomic mass'.
  37. 1(a)(i)1 mark· Chemistry · Unit 1 Q1 1(a)(i)State the property of elements which is responsible for the characteristic line spectrum of each element.
  38. 1(a)(i)2 marks· Chemistry · Unit 1 Q1 1(a)(i)State THREE postulates of Dalton's atomic theory.
  39. 1(a)(i)4 marks· Chemistry · Unit 1 Q1 1(a)(i)List FOUR postulates of Dalton's atomic theory.
  40. 1(a)(ii)3 marks· Chemistry · Unit 1 Q1 1(a)(ii)Sketch a diagram of the line emission spectrum of hydrogen. On your diagram, indicate the direction of increasing frequency and increasing wavelength.
  41. 1(a)(ii)2 marks· Chemistry · Unit 1 Q1 1(a)(ii)Later developments in science led to the modification of the atomic theory. Explain the modification of ONE of the postulates.
  42. 1(a)(ii)2 marks· Chemistry · Unit 1 Q1 1(a)(ii)Identify TWO of Dalton's postulates which were proven invalid by modern atomic theory.
  43. 1(a)(iii)4 marks· Chemistry · Unit 1 Q1 1(a)(iii)Explain, in terms of electronic transitions, the origin of the lines in the Balmer series.
  44. 1(a)(iv)1 mark· Chemistry · Unit 1 Q1 1(a)(iv)State the region of the electromagnetic spectrum in which the lines in the Balmer series occur.
  45. 1(a)(v)2 marks· Chemistry · Unit 1 Q1 1(a)(v)Calculate the energy (E) of a quantum of radiation with a corresponding frequency (v) of 4.57 x 10^14 Hz. (h = 4 x 10^-13 kJ s mol^-1)
  46. 1(b)2 marks· Chemistry · Unit 1 Q1 1(b)Dalton's atomic theory suggests that: • all atoms of a particular element are identical • atoms of elements are indivisible. State TWO pieces of evidence that lead to the rejection of these claims.
  47. 1(b)3 marks· Chemistry · Unit 1 Q1 1(b)Use the data booklet and the mass spectrum given above to determine the number of protons and neutrons of the most abundant isotope of titanium.
  48. 1(c)2 marks· Chemistry · Unit 1 Q1 1(c)Write the equation which represents the capture of a neutron by a fluorine-19 atom with the resultant expelling of an α-particle.
  49. 1(c)1 mark· Chemistry · Unit 1 Q1 1(c)Using s, p, d, f notation, write the electronic configuration of titanium.
  50. 1(d)2 marks· Chemistry · Unit 1 Q1 1(d)Draw the shapes of the orbitals of principal quantum number n = 2 in the titanium atom.
  51. 1(d)2 marks· Chemistry · Unit 1 Q1 1(d)Calculate the relative atomic mass of the metal.
  52. 1(e)2 marks· Chemistry · Unit 1 Q1 1(e)Another isotope of titanium, ⁵¹Ti, decays by β-emission. A β-particle has no mass and a single negative charge. Write an equation to represent the decay of a ⁵¹Ti atom.
  53. 21 mark· Chemistry · Unit 1 Q2 2Which of the following factors is important in determining the stability of an isotope?
  54. 4(a)3 marks· Chemistry · Unit 1 Q4 4(a)State THREE factors which affect the first ionisation energy of the elements.
  55. 4(a)4 marks· Chemistry · Unit 1 Q4 4(a)Copy and complete Table 3, which provides information on the properties of the simple subatomic particles.
  56. 4(a)(i)1 mark· Chemistry · Unit 1 Q4 4(a)(i)State the electronic configuration of carbon in its ground state using sp notation.
  57. 4(a)(i)6 marks· Chemistry · Unit 1 Q4 4(a)(i)Describe the THREE types of radiation that an unstable atom may emit. Include in your answer the symbols and penetrating power of EACH type of radiation.
  58. 4(a)(ii)2 marks· Chemistry · Unit 1 Q4 4(a)(ii)Americium-241 (Am-241) decays via alpha particle emission. Write the nuclear equations to show the new element that forms when an atom of ²⁴¹₉₅Am decays via the emission of 2 alpha particles.
  59. 4(b)(i)1 mark· Chemistry · Unit 1 Q4 4(b)(i)Name the type of radioactive particle that behaves in the same way as the electron.
  60. 4(b)(i)2 marks· Chemistry · Unit 1 Q4 4(b)(i)Draw the diagrams of the atomic orbitals of principal quantum number 2. Include x, y and z axes in your drawing.
  61. 4(b)(ii)6 marks· Chemistry · Unit 1 Q4 4(b)(ii)State the product formed from the decay of 216Po by the emission of three β particles and calculate the n/p ratio of BOTH the reactant and product atoms.
  62. 4(b)(ii)5 marks· Chemistry · Unit 1 Q4 4(b)(ii)Write the s, p and d electronic configuration of O²⁻.
  63. 4(b)(ii)5 marks· Chemistry · Unit 1 Q4 4(b)(ii)Comment on the similarity and difference in the electronic configurations of K, Sc and Zn²⁺ given below.
  64. 4(b)(iii)1 mark· Chemistry · Unit 1 Q4 4(b)(iii)Comment on the effect that the decay has on the stability of the nucleus of 216Po.
  65. 4(c)3 marks· Chemistry · Unit 1 Q4 4(c)Explain how ionization energy data provide evidence for shells and subshells.
  66. 4(c)(i)2 marks· Chemistry · Unit 1 Q4 4(c)(i)Draw the structures of the atomic orbitals of principal quantum number 2. Include x, y and z axes in the drawing.
  67. 4(d)(i)1 mark· Chemistry · Unit 1 Q4 4(d)(i)Write the electronic configuration of the element represented in Figure 1.
  68. 4(d)(ii)1 mark· Chemistry · Unit 1 Q4 4(d)(ii)Suggest an identity for the element.
  69. 4(d)(iii)2 marks· Chemistry · Unit 1 Q4 4(d)(iii)Write a balanced equation to illustrate the first ionisation of the element.
  70. 51 mark· Chemistry · Unit 1 Q5 5When an atom of 238 U is bombarded with a neutron, how many fundamental particles (protons - p, neutrons - n and electrons - e) does an atom of the PRODUCT contain?
  71. 51 mark· Chemistry · Unit 1 Q5 5Which of the following statements are TRUE regarding the factors affecting ionization energies?
  72. 61 mark· Chemistry · Unit 1 Q6 6Based on the data in the table above, the relative isotopic mass of lead is
  73. 61 mark· Chemistry · Unit 1 Q6 6Based on the data in the table above, the relative isotopic mass of lead is
  74. 6(b)(i)5 marks· Chemistry · Unit 1 Q6 6(b)(i)Explain the terms 'atomic radius' and 'ionic radius'.
  75. 81 mark· Chemistry · Unit 1 Q8 8From the data above, it can be deduced that X is a
  76. 81 mark· Chemistry · Unit 1 Q8 8From the data above, it can be deduced that X is a
  77. 151 mark· Chemistry · Unit 1 Q15 15Which of the following diagrams BEST illustrates the line emission spectrum of hydrogen?

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