plumiHow have our ideas about atoms developed over time?: OCR GCSE Combined Science B questions
Every OCR GCSE Combined Science B exam question on C2.1 How have our ideas about atoms developed over time?, 2018–2025, with its mark scheme and examiner’s report.
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Calculations
Q8(a)
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Q8(b)
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Q1(b)
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The whole paper ↗Q1(d)
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Q3(b)
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The whole paper ↗Q5(a)
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Q2(a)(i)
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Q2(a)(ii)
The whole paper ↗Q2(b)(i)
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The whole paper ↗Q2(b)(iii)
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All 31 questions on How have our ideas about atoms developed over time?, as a list
- June 2025, Chemistry Paper 2 Foundation, Q8(a) (2 marks): Later discoveries led to scientists suggesting new models for the atom. Draw lines to connect each discovery with the model it led to. Discovery Model _ _ _ Ele
- June 2025, Chemistry Paper 2 Foundation, Q8(b) (3 marks): The modern model of the atom consists of electrons, neutrons and protons. Which statements about the modern model of the atom are true and which are false? Tick
- June 2025, Chemistry Paper 2 Foundation, Q8(c) (2 marks): The diameter of an atom is 1 × 10–10 m and the diameter of a nucleus is 1.7 × 10–15 m. Estimate how many times bigger the atom is compared to the nucleus. Numbe
- June 2025, Chemistry Paper 2 Foundation, Q8(d) (4 marks): The atomic number and mass number can be used to find the number of protons, neutrons and electrons in an atom. The table shows information about an argon atom
- June 2025, Chemistry Paper 6 Higher, Q1(a) (2 marks): Later discoveries led to scientists suggesting new models for the atom. Draw lines to connect each discovery with the model it led to. Discovery Model _ _ _ Ele
- June 2025, Chemistry Paper 6 Higher, Q1(b) (3 marks): The modern model of the atom consists of electrons, neutrons and protons. Which statements about the modern model of the atom are true and which are false? Tick
- June 2025, Chemistry Paper 6 Higher, Q1(c) (2 marks): The diameter of an atom is 1 × 10–10 m and the diameter of a nucleus is 1.7 × 10–15 m. Estimate how many times bigger the atom is compared to the nucleus. Numbe
- June 2025, Chemistry Paper 6 Higher, Q1(d) (4 marks): The atomic number and mass number can be used to find the number of protons, neutrons and electrons in an atom. The table shows information about an argon atom
- June 2024, Chemistry Paper 2 Foundation, Q1(a)(i) (5 marks): Complete Table 1.1. Use the Data Sheet. [5]
- June 2024, Chemistry Paper 6 Higher, Q3(a) (3 marks): Complete the table to show the relative masses and charges of the three particles in the atom. Particle Relative Mass Relative Charge Proton Neutron Electron [3
- June 2024, Chemistry Paper 6 Higher, Q3(b) (2 marks): A student builds a model of an atom. They use a tennis ball with a diameter of 6.7 cm to represent the nucleus in the model. The diameter of an atom is 1 × 105
- June 2024, Chemistry Paper 6 Higher, Q3(c) (3 marks): The number of protons, neutrons and electrons in an atom or an ion can be calculated using the atomic number and relative atomic mass of the element. Complete t
- June 2023, Chemistry Paper 6 Higher, Q5(a) (2 marks): Around 1800, Dalton stated that atoms are the smallest particles that exist. The models show how the atomic model has developed further over time: − _ + + − _ −
- June 2023, Chemistry Paper 6 Higher, Q5(b) (2 marks): The diameter of an atom is approximately 50 000 times bigger than its nucleus. The diameter of an atom is approximately 1 × 10–10 m. Estimate the diameter of a
- June 2022, Chemistry Paper 6 Higher, Q3(b)(i) (2 marks): Give the electronic structures of calcium and chlorine. Calcium Chlorine [2]
- November 2021, Chemistry Paper 2 Foundation, Q2(a)(i) (2 marks): Draw lines to connect each scientist with their idea about the structure of the atom. Scientist Idea Bohr Atoms contain a nucleus. Electrons are arranged in Rut
- November 2021, Chemistry Paper 2 Foundation, Q2(a)(ii) (1 mark): Give one reason why scientists needed to develop new ideas about the structure of the atom over time. [1]
- November 2021, Chemistry Paper 2 Foundation, Q2(b)(i) (1 mark): Complete the table by giving the charge of each of these particles. Particle Charge Electron Proton Neutron [1]
- November 2021, Chemistry Paper 2 Foundation, Q2(b)(ii) (1 mark): Electrons are arranged in shells around the outside of the atom. Give the location of the other particles in the atom. [1]
- November 2021, Chemistry Paper 2 Foundation, Q2(b)(iii) (2 marks): How many electrons, protons and neutrons are there in an atom of phosphorus? Use the Data Sheet. Electrons Protons Neutrons [2]
- November 2021, Chemistry Paper 2 Foundation, Q2(c) (2 marks): Sodium is in Group 1 of the Periodic Table. Complete the diagram to show the arrangement of electrons in a sodium atom. Use the Data Sheet. Na [2]
- November 2021, Combined Science Paper 4 Foundation, Q7(d) (2 marks): Sodium has an atomic number of 11 and a relative atomic mass of 23. Complete the table to show the number of protons, neutrons and electrons in a sodium ion, Na
- November 2020, Chemistry Paper 2 Foundation, Q1(a)(i) (3 marks): Complete the table to give information about protons, neutrons and electrons. Relative mass Relative Charge Location in the atom Proton 1 +1 Neutron Electron in
- November 2020, Chemistry Paper 2 Foundation, Q1(b) (2 marks): The diameter of an atom is approximately 0.1 nm. The diameter of a bacterium is approximately 10 000 times bigger than the diameter of an atom. Estimate the dia
- November 2020, Chemistry Paper 2 Foundation, Q9(a) (3 marks): The atomic number and relative atomic mass of an element can be used to work out the number of protons, electrons and neutrons in its atoms and ions. Complete t
- November 2020, Chemistry Paper 6 Higher, Q2(a) (3 marks): The atomic number and relative atomic mass of an element can be used to work out the number of protons, electrons and neutrons in its atoms and ions. Complete t
- November 2020, Chemistry Paper 6 Higher, Q4(a)(i) (2 marks): Complete the table to show the relative masses and charges of these particles. Particle Relative mass Relative charge Proton Neutron Electron [2]
- November 2020, Chemistry Paper 6 Higher, Q4(a)(ii) (2 marks): Describe how these three particles are arranged in an atom. [2]
- November 2020, Chemistry Paper 6 Higher, Q4(b) (2 marks): James builds a model of an atom. He uses a golf ball with a diameter of 43 mm to represent the nucleus in his model. The diameter of an atom is 1 × 105 times la
- June 2019, Chemistry Paper 2 Foundation, Q6(a) (3 marks): The nucleus contains protons and neutrons. Which statements about the nucleus are true and which are false? Tick (3) one box in each row. Statement True False M
- June 2019, Chemistry Paper 2 Foundation, Q6(b) (2 marks): An atom of strontium has an atomic number of 38 and a mass number of 88. How many protons, electrons, and neutrons are in an atom of strontium? Protons = Electr
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