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Particles in the Atom · CSEC Physics

38 past-paper questions on Particles in the Atom, part of The Physics of the Atom, from every CSEC Physics paper on Quelpr.

Practise Particles in the Atom
  1. 3(a)(i)3 marks· CSEC Physics · 1988 · Paper 2Identify the components X, Y and Z labelled in the diagram.
  2. 3(a)(ii)3 marks· CSEC Physics · 1988 · Paper 2State whether or not the atom is neutral and explain your answer. Then record the mass (nucleon) number of the atom.
  3. 3(a)(iii)3 marks· CSEC Physics · 1988 · Paper 2Draw a similar diagram to represent an isotope of the atom in (ii), and record its mass (nucleon) number.
  4. 4(a)(i)2 marks· CSEC Physics · 1991 · Paper 2Determine the number of neutrons and the number of protons in this nuclide.
  5. 4(a)(ii)2 marks· CSEC Physics · 1991 · Paper 2An electron is represented as ⁰₋₁e. Explain whether a mass number of 0 implies that the electron has zero mass.
  6. 2(a)(i)1 mark· CSEC Physics · 1995 · Paper 2The atomic number of chlorine (Cl) is 17. How many protons are there in one atom of silicon (Si)?
  7. 2(a)(ii)4 marks· CSEC Physics · 1995 · Paper 2The most common isotope of boron (B) may be represented as ¹¹₅B. A boron atom has two shells of electrons, with two electrons in the first shell. In the space provided, draw a clear diagram to represent the number and…
  8. 2(a)(iii)1 mark· CSEC Physics · 1995 · Paper 2Write the symbol for another possible isotope of boron.
  9. 3(a)1 mark· CSEC Physics · 1996 · Paper 2Complete the diagram to show the correct number of electrons in the outer shell of the atom.
  10. 3(a)(i)1 mark· CSEC Physics · 1996 · Paper 2State the name of the other particles in the nucleus.
  11. 3(a)(ii)2 marks· CSEC Physics · 1996 · Paper 2The nuclide can be represented by the symbol ^A_Z C. State what A is known as and give its value.
  12. 3(a)(iii)2 marks· CSEC Physics · 1996 · Paper 2State what Z is known as and give its value.
  13. 4(c)(ii)2 marks· CSEC Physics · 1998 · Paper 2Give the symbol for another possible isotope of iodine.
  14. 6(a)(i)1 mark· CSEC Physics · 2021 · Paper 2For a neutral atom of Radium-226, state the number of protons.
  15. 6(a)(ii)1 mark· CSEC Physics · 2021 · Paper 2For a neutral atom of Radium-226, state the number of neutrons.
  16. 6(a)(iii)1 mark· CSEC Physics · 2021 · Paper 2For a neutral atom of Radium-226, state the number of electrons.
  17. 1(e)2 marks· Physics Q1 1(e)All elements including radioactive substances have an 'atomic number' and 'mass number'. Explain what the two terms mean. Atomic number: Mass number:
  18. 1(f)1 mark· Physics Q1 1(f)In medicine, Iodine-123, [¹²³₅₃I] is used to check a patient's thyroid function. What does '123' represent?
  19. 2(a)(i)3 marks· Physics Q2 2(a)(i)Complete the following table to show the charge of EACH particle.
  20. 2(a)(ii)4 marks· Physics Q2 2(a)(ii)For the element 226/88 Ra, determine the number of EACH of the three particles referred to in (a)(i).
  21. 2(a)(iii)2 marks· Physics Q2 2(a)(iii)State ONE similarity and ONE difference between the isotopes of an element.
  22. 3(a)3 marks· Physics Q3 3(a)The THREE MAIN particles in an atom are: A. B. C.
  23. 3(b)3 marks· Physics Q3 3(b)The corresponding location of EACH of these particles is: A. B. C.
  24. 3(c)1 mark· Physics Q3 3(c)The particle with NO charge is called
  25. 3(c)(i)1 mark· Physics Q3 3(c)(i)State the value of p.
  26. 5(a)(i)3 marks· Physics Q5 5(a)(i)Explain the meaning of EACH of the following terms: Atomic number
  27. 5(a)(ii)3 marks· Physics Q5 5(a)(ii)Explain the meaning of EACH of the following terms: Mass number
  28. 5(a)(iii)3 marks· Physics Q5 5(a)(iii)Explain the meaning of EACH of the following terms: Neutron number
  29. 5(b)1 mark· Physics Q5 5(b)With reference to the symbol A X, write the formula that links the neutron number to the atomic number and the mass number.
  30. 5(c)(i)2 marks· Physics Q5 5(c)(i)Describe the relationship between the shell model of the atom and the periodic table.
  31. 5(c)(ii)2 marks· Physics Q5 5(c)(ii)Explain the meaning of the term 'isotope'.
  32. 6(a)(i)2 marks· Physics Q6 6(a)(i)Use the information given above to determine the number of protons and neutrons present in an atom of lithium-7.
  33. 6(a)(ii)4 marks· Physics Q6 6(a)(ii)Draw a clearly labelled diagram of the structure of the lithium-7 atom.
  34. 6(b)4 marks· Physics Q6 6(b)Explain why an atom is normally neutral and stable.
  35. 6(b)(ii)1 mark· Physics Q6 6(b)(ii)Using the same standard notation, state a possible isotope of ²⁸₁₄Si.
  36. 6(b)(iii)1 mark· Physics Q6 6(b)(iii)You are required to determine: which nuclides are isotopes.
  37. 6(c)2 marks· Physics Q6 6(c)What are 'isotopes'?
  38. 6(d)(ii)1 mark· Physics Q6 6(d)(ii)Write the symbol for another possible isotope of X.

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