Lesson 3.1.1.1

3.1.1.1 Fundamental particles Quiz: AQA Chemistry, Unit 1

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 3.1.1.1, Fundamental particles: 20 multiple choice questions for the AQA Chemistry (7405), Unit 1: Physical chemistry, written with Revision Ninja.

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The 20 questions

  1. Which row correctly gives the relative charge and relative mass of a proton?

    • +1 and 1/1840
    • +1 and 1
    • -1 and 1/1840
    • 0 and 1

  2. What is the relative charge of a neutron?

    • -2
    • -1
    • 0
    • +1

  3. Where is almost all the mass of an atom concentrated?

    • Electron cloud
    • Orbitals
    • Outer shell
    • Nucleus

  4. Which subatomic particle has the smallest relative mass?

    • A positron
    • An electron
    • A proton
    • A neutron

  5. Which subatomic particles are found inside the nucleus of an atom?

    • Neutrons and electrons
    • Protons and neutrons
    • Protons and electrons
    • Electrons only

  6. Which scientist's gold foil experiment showed that most of an atom's mass and positive charge are concentrated in a small nucleus?

    • Niels Bohr
    • Joseph John Thomson
    • John Dalton
    • Ernest Rutherford

  7. In Thomson's plum pudding model, what are embedded in the positive sphere?

    • Alpha particles
    • Electrons
    • Protons
    • Neutrons

  8. An atom has 11 protons and 12 neutrons, and it has 10 electrons. What is its overall charge?

    • +2
    • +1
    • 0
    • -1

  9. An atom has a mass number of 39 and 19 protons. How many neutrons does it contain?

    • 20
    • 58
    • 39
    • 19

  10. What is the relative charge of an electron compared to a proton?

    • 0
    • -2
    • +1
    • -1

  11. A neutral magnesium atom has 12 protons. Mg2+ is formed by losing two electrons. How many electrons does Mg2+ contain?

    • 12
    • 14
    • 24
    • 10

  12. A neutral sulfur atom has 16 protons. How many electrons does the S2- ion contain?

    • 16
    • 14
    • 18
    • 32

  13. How many electrons are present in a neutral atom with nine protons?

    • 1
    • 19
    • 9
    • 10

  14. What did Rutherford's alpha particle scattering experiment prove atoms are mostly made of?

    • Solid mass
    • Negatively charged matrix
    • Empty space
    • Positive charge

  15. What is the relative mass of an electron compared to a proton?

    • 0
    • 1
    • 1/100
    • 1/1840

  16. An X3+ ion has 10 electrons. What is the proton number of element X?

    • 16
    • 10
    • 13
    • 7

  17. An atom has 6 protons and 8 neutrons and is neutral. What is the total number of protons, neutrons and electrons in it?

    • 14
    • 6
    • 12
    • 20

  18. Which subatomic particles are equal in number in a neutral atom?

    • Positrons and electrons
    • Protons and neutrons
    • Neutrons and electrons
    • Protons and electrons

  19. What is the overall electrical charge of an atomic nucleus?

    • Variable
    • Negative
    • Neutral
    • Positive

  20. What is the approximate relative mass of a neutron?

    • 1/1840
    • 0
    • +1
    • 1

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