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Radioactivity - Atomic Structure

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10 questions
Show answers
  • Q1
    What is an atom?
    An atom is a particle consisting of a small central nucleus containing neutrons and electrons surrounded by protons
    An atom is a particle consisting of a small central nucleus containing protons and neutrons surrounded by electrons
    An atom is made up of an electron
    An atom is made up of molecules such as H2O
    30s
  • Q2
    What is the relative charge of a proton?
    +10
    -1
    +1
    0
    30s
  • Q3
    What is the relative charge of a neutron?
    -1
    0
    +1
    -10
    30s
  • Q4
    What is the relative mass of a proton?
    0
    -1
    +10
    +1
    30s
  • Q5
    What is the relative mass of an electron?
    +10
    -1
    0
    +1
    30s
  • Q6
    A neutral atom has five protons. How many electrons does it contain if it is not an ion?
    5
    4
    10
    1
    30s
  • Q7
    What is an atom called which has lost an electron?
    Quark
    Oxygen
    Ion
    Baryon
    30s
  • Q8
    What does an atom's atomic number represent?
    The number of protons in an atom in its nucleus
    The number of particles within an atom in its nucleus
    The number of electrons in an atom in its nucleus
    The number of neutrons in an atom in its nucleus
    30s
  • Q9
    Atoms of an element always have the same number of protons but can have a different number of what?
    Electron masses
    Proton masses
    Atomic numbers
    Neutrons
    30s
  • Q10
    If an atom has 3 electrons and has a neutral charge, how many protons does it contain?
    3
    1
    4
    2
    30s

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