Structure of the Atom
2 years ago
ghazwaaldoori
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20 QuestionsShow answers
  • Question 1
    180 seconds
    Q. What is at the center of every atom?
    answer choices
    An electron
    A compound
    A molecule
    A nucleus
  • Question 2
    180 seconds
    Q. Which two particles make up the nucleus of an atom?
    answer choices
    Protons and Electrons
    Protons and Neutrons
    Molecules and Compounds
    Neutrons and Electrons
  • Question 3
    180 seconds
    Q. In an atom, what is the number of protons equal to?
    answer choices
    The number of electrons.
    The number of neutrons.
    The number of molecules.
    The number of nuclei.
  • Question 4
    30 seconds
    Q. The particles with no charge in an atom are the _______.
    answer choices
    electrons
    neutrons
    protons
    protons and neutrons
  • Question 5
    30 seconds
    Q. The positively charged particles of an atom are the ________.
    answer choices
    electrons
    protons
    neutrons
    protons & neutrons
  • Question 6
    30 seconds
    Q. The negatively charged particles of an atom are the ______.
    answer choices
    electrons
    protons
    neutrons
    protons & neutrons
  • Question 7
    10 seconds
    Q. An electron has this charge
    answer choices
    positive
    negative
    neutral
  • Question 8
    10 seconds
    Q. A neutron has this charge
    answer choices
    negative
    positive
    neutral
  • Question 9
    10 seconds
    Q. A proton has this charge
    answer choices
    negative
    positive
    neutral
  • Question 10
    30 seconds
    Q. A particle that moves around the nucleus is a(n)...
    answer choices
    Proton
    Neutron
    Electron
    Quark
  • Question 11
    30 seconds
    Q. The center of an atom that holds protons and neutrons?
    answer choices
    model
    electron
    nucleus
    neutron
  • Question 12
    30 seconds
    Q. What does the nucleus of an atom contain?
    answer choices
    Electrons and neutrons
    Protons and neutrons
    Neutrinos and positrons
    DNA and RN
  • Question 13
    60 seconds
    Q. What number indicates an electron?
    answer choices
    1
    2
    3
    4
  • Question 14
    60 seconds
    Q. What number indicates the nucleus?
    answer choices
    1
    2
    3
    4
  • Question 15
    60 seconds
    Q. Which element has 31 protons ?
    answer choices
    Gallium 
    Germanium
    Gadolinium
    Polonium
  • Question 16
    10 seconds
    Q. What is the mass number?
    answer choices
    the number of protons
    the sum of the number of protons and the number of neutrons in the nucleus of an atom 
    the number of electrons
    the number of neutrons
  • Question 17
    10 seconds
    Q. What is the atomic number?
    answer choices
    number of protons
    number of neutrons
  • Question 18
    60 seconds
    Q. Which element has 31 protons ?
    answer choices
    Gallium 
    Germanium
    Gadolinium
    Polonium
  • Question 19
    60 seconds
    Q. Oxygen’s atomic number is 8. This means that an oxygen atom must have
    answer choices
    8 electrons
    8 protons
    8 neutrons
    a mass number of 8
  • Question 20
    60 seconds
    Q.  What is the mass number of this element?
    answer choices
    5
    27
    32
    59
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