Questions as text
Q1 · Which row compares the number of protons and the number of neutrons in atoms of different… 0654/21 May/June 2017
40 Which row compares the number of protons and the number of neutrons in atoms of different isotopes of an element? number of number of protons neutrons A different different B different the same C the same different D the same the same
1 marks
Answer: C
This question in 0654/21 May/June 2017
Q2 · The diagrams represent pairs of nuclei of some atoms 0654/22 Oct/Nov 2017
40 The diagrams represent pairs of nuclei of some atoms. Which pair shows nuclei of different isotopes of the same element? A B key neutron proton C D
1 marks
Answer: B
This question in 0654/22 Oct/Nov 2017
Q3 · There are three different isotopes of hydrogen 0654/21 May/June 2019
40 There are three different isotopes of hydrogen. 1 H H 2 H 3 1 1 1 Which statement about the nuclei of these three isotopes is correct? A They have different numbers of electrons. B They have the same number of nucleons. C They have the same number of neutrons. D They have the same number of protons.
1 marks
Answer: D
This question in 0654/21 May/June 2019
Q4 · An atom of an isotope of strontium (Sr) has a proton number of 38 and contains 52 neutrons 0654/23 May/June 2019
35 An atom of an isotope of strontium (Sr) has a proton number of 38 and contains 52 neutrons. What is the nuclide notation for this isotope? A 52 Sr B 90 Sr C 38 Sr D 90 Sr 38 38 52 52
1 marks
Answer: B
This question in 0654/23 May/June 2019
Q5 · The diagrams represent the nuclei of four different atoms V, W, X and Y 0654/21 May/June 2020
40 The diagrams represent the nuclei of four different atoms V, W, X and Y. V W X Y key n p n p proton p p n n n n p p p p n p p p n n neutron p n n n Which two diagrams represent isotopes of the same element? A V and Y B W and X C X and Y D Y and W
1 marks
Answer: C
This question in 0654/21 May/June 2020
Q6 · The diagrams represent the nuclei of four different atoms V, W, X and Y 0654/22 May/June 2020
40 The diagrams represent the nuclei of four different atoms V, W, X and Y. V W X Y key n p n p proton p p n n n n p p p p n p p p n n neutron p n n n Which two diagrams represent isotopes of the same element? A V and Y B W and X C X and Y D Y and W
1 marks
Answer: C
This question in 0654/22 May/June 2020
Q7 · The diagrams represent the nuclei of four different atoms V, W, X and Y 0654/23 May/June 2020
40 The diagrams represent the nuclei of four different atoms V, W, X and Y. V W X Y key n p n p proton p p n n n n p p p p n p p p n n neutron p n n n Which two diagrams represent isotopes of the same element? A V and Y B W and X C X and Y D Y and W
1 marks
Answer: C
This question in 0654/23 May/June 2020
Q8 · The table compares an atom of carbon-13 and an atom of nitrogen-14 0654/22 Feb/March 2021
39 The table compares an atom of carbon-13 and an atom of nitrogen-14. carbon-13 nitrogen-14 nucleon number A 13 14 proton number Z 6 7 What do the neutral atom of carbon-13 and the neutral atom of nitrogen-14 have the same number of? A electrons B ions C neutrons D protons
1 marks
Answer: C
This question in 0654/22 Feb/March 2021
Q9 · The Sun is an important energy resource 0654/21 May/June 2021
32 The Sun is an important energy resource. Which energy source powers the Sun? A chemical B geothermal C nuclear fission D nuclear fusion
1 marks
Answer: D
This question in 0654/21 May/June 2021
Q10 · The Sun is an important energy resource 0654/23 May/June 2021
31 The Sun is an important energy resource. Which energy source powers the Sun? A chemical B geothermal C nuclear fission D nuclear fusion
1 marks
Answer: D
This question in 0654/23 May/June 2021
Q11 · An atom of beryllium is represented by Be 0654/21 May/June 2022
39 An atom of beryllium is represented by Be. 9 4 How many neutrons are in the nucleus of this type of beryllium atom? A 4 B 5 C 9 D 13
1 marks
Answer: B
This question in 0654/21 May/June 2022
Q12 · An atom of beryllium is represented by Be 0654/22 May/June 2022
39 An atom of beryllium is represented by Be. 9 4 How many neutrons are in the nucleus of this type of beryllium atom? A 4 B 5 C 9 D 13
1 marks
Answer: B
This question in 0654/22 May/June 2022
Q13 · What is the name of the process by which energy is released in the Sun? 0654/23 May/June 2022
31 What is the name of the process by which energy is released in the Sun? A background radiation B chemical reaction C nuclear fission D nuclear fusion
1 marks
Answer: D
This question in 0654/23 May/June 2022
Q14 · An atom of beryllium is represented by Be 0654/23 May/June 2022
39 An atom of beryllium is represented by Be. 9 4 How many neutrons are in the nucleus of this type of beryllium atom? A 4 B 5 C 9 D 13
1 marks
Answer: B
This question in 0654/23 May/June 2022
Q15 · The diagrams represent pairs of nuclei of some atoms 0654/23 Oct/Nov 2022
40 The diagrams represent pairs of nuclei of some atoms. Which pair shows nuclei of different isotopes of the same element? A B key neutron proton C D
1 marks
Answer: B
This question in 0654/23 Oct/Nov 2022
Q16 · A radioactive nucleus 238 U decays into a thorium (Th) nucleus by emitting an… 0654/21 May/June 2023
39 A radioactive nucleus 238 U decays into a thorium (Th) nucleus by emitting an alpha-particle. 92 What is the symbol for the thorium nucleus formed? A 234 Th B 234 Th C 238 Th D 238 Th 90 92 90 92
1 marks
Answer: A
This question in 0654/21 May/June 2023
Q17 · A proton has charge q and mass m 0654/21 May/June 2024
40 A proton has charge q and mass m. A neutron has no charge and mass m. Which row shows the charge and mass of an alpha ()-particle? charge mass A 2q 2m B 2q 4m C 4q 2m D 4q 4m
1 marks
Answer: B
This question in 0654/21 May/June 2024
Q18 · A carbon-14 nucleus undergoes – decay and produces an isotope of nitrogen 0654/21 Oct/Nov 2025
39 A carbon-14 nucleus undergoes – decay and produces an isotope of nitrogen. The decay equation is shown. 14 6C A ZN + β– Which row gives the values of A and Z? A Z A 13 6 B 13 7 C 14 6 D 14 7
1 marks
Answer: D
This question in 0654/21 Oct/Nov 2025
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