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3.1-3.3B Chemistry Quiz Practice

Quiz by Megan Jenkins

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20 questions
Show answers
  • Q1
    John Dalton thought that atoms
    contains molecules
    Cannot be broken down further
    are all composed of carbon
    have no mass
    30s
  • Q2
    Mass is neither created nor destroyed is the law of
    gravity
    conservation of mass
    conservation of momentum
    definite proportions
    30s
  • Q3
    A chemical compound always has the same elements in the same proportions by mass regardless of the source of the compound. This is a statement of the law of
    multiple proportions
    conservation of mass
    definite proportions
    isotopes
    30s
  • Q4
    Which of the following is NOT a part of Dalton's atomic theory?
    An atom consists of a nucleus and a cloud of electrons.
    All matter is composed of atoms.
    Atoms cannot be subdivided, created, or destroyed.
    In chemical reactions, atoms are combined, separated, or rearranged.
    30s
  • Q5
    Cathode rays are composed of ______________ because they were deflected by the negative magnetic field.
    protons
    neutrons
    alpha particles
    electrons
    30s
  • Q6
    Who discovered the electron?
    Rutherford
    Democritus
    Thomson
    Dalton
    30s
  • Q7
    An important result of Rutherford's experiment with gold foil was to establish that
    electrons have a negative charge
    atoms have mass
    neutrons exist.
    the nucleus is a small, dense region of positive charge.
    30s
  • Q8
    Rutherford discovered the
    both of these
    neither of these
    proton
    nucleus
    30s
  • Q9
    Which subatomic particle has a charge of +1?
    meson
    proton
    neutron
    electron
    30s
  • Q10
    Which particle has the least mass?
    all are the same
    electron
    proton
    neutron
    30s
  • Q11
    Electrons are ___________ the nucleus while protons and neutrons are __________________.
    outside; inside
    inside; inside
    outside; outside
    inside; outside
    30s
  • Q12
    The atomic number of an element is the same as the number of
    neutrons
    protons
    protons + neutrons
    protons + electrons
    30s
  • Q13
    Isotopes are atoms of the same element that have different
    atomic numbers
    masses
    charges
    number of electrons
    30s
  • Q14
    Mass number is
    the total number of electrons in an atom of an element
    the average atomic mass of an element
    the total number of protons and neutrons in an atom of an element
    the total number of protons in an atom of an element
    30s
  • Q15
    How many neutrons are present in an atom of silver (Ag) that has an atomic number of 47 and a mass number of 103?
    103
    150
    56
    47
    30s

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