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9th Grade Atomic theories and the composition of an atom test

Quiz by Jaime

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25 questions
Show answers
  • Q1
    Most of the mass of an atom is located in the electrons of the atom.
    FALSE
    TRUE
    45s
  • Q2
    Electrons occupy most of the volume of an atom.
    TRUE
    FALSE
    45s
  • Q3
    The positive charges in an atom are spread uniformly throughout the entire atom.
    TRUE
    FALSE
    45s
  • Q4
    Electrons occupy most of the volume of an atom.
    TRUE
    FALSE
    45s
  • Q5
    The positive charges in an atom are spread uniformly throughout the entire atom.
    FALSE
    TRUE
    45s
  • Q6
    Some positively charged alpha particles were deflected rather than passing straight through thin metal foil. To explain this, Rutherford postulated that the nucleus of the atom must be positive.
    FALSE
    TRUE
    45s
  • Q7
    Ions are
    electrodes
    electrons
    neutrons
    charged atoms (or groups of atoms).
    45s
  • Q8
    A cation is a
    positively charged ion.
    negatively charged ion.
    negative electrode.
    positive electrode.
    45s
  • Q9
    Cathode rays are beams of
    neutrons
    protons
    electrons
    anions
    45s
  • Q10
    An anion is a
    positive electrode.
    negative electrode.
    positively charged ion.
    negatively charged ion.
    45s
  • Q11
    The atom is the fundamental building block of everything we hear, feel, see, and experience.
    FALSE
    TRUE
    45s
  • Q12
    John Dalton was the first person recorded as thinking that matter was ultimately composed of atoms.
    TRUE
    FALSE
    45s
  • Q13
    John Dalton formalized an atomic theory that gained acceptance in the early 19th century.
    FALSE
    TRUE
    45s
  • Q14
    The plum pudding model proposed that negatively charged electrons were held in a sphere of positive charge.
    FALSE
    TRUE
    45s
  • Q15
    All of the positive charge of an atom is concentrated in the nucleus.
    TRUE
    FALSE
    45s

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