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MCQs

Total Questions : 622 | Page 61 of 63 pages
Question 601. Which part of an atom is used to identify it?
  1.    number of protons
  2.    number of neutrons
  3.    number of electrons
  4.    All of above
 Discuss Question
Answer: Option A. -> number of protons
Question 602. Which of these phrases best describes an atom?
  1.    a positive nucleus surrounded by a hard negative shell
  2.    a positive nucleus surrounded by a cloud of negative charges
  3.    a hard sphere with postive and negative charges on the outside
  4.    a negative nucleus surrounded by protons and neutrons
 Discuss Question
Answer: Option B. -> a positive nucleus surrounded by a cloud of negative charges
Question 603. What is true about an atom?
  1.    Most of the space in an atom is taken up by the nucleus
  2.    Atoms are mostly empty space
  3.    Atoms have no mass
  4.    Electrons have much more mass that protons or neutrons.
 Discuss Question
Answer: Option B. -> Atoms are mostly empty space
Question 604. The area of the atom where protons and neutrons are found
  1.    Electron Cloud
  2.    Nucleus
  3.    Energy Level
  4.    All of above
 Discuss Question
Answer: Option B. -> Nucleus
Question 605. Which subatomic particles are found in the nucleus of an atom?
  1.    Protons and Electrons
  2.    Protons and Neutrons
  3.    Neutrons and Electrons
  4.    Protons, Neutrons and Electrons
 Discuss Question
Answer: Option B. -> Protons and Neutrons
Question 606. A positively charged particle found in the nucleus of the atom
  1.    Proton
  2.    Electron
  3.    Neutron
  4.    All of above
 Discuss Question
Answer: Option A. -> Proton
Question 607. How many neutrons does a silver atom with a mass of 108 amu have?
  1.    47
  2.    108
  3.    61
  4.    108
 Discuss Question
Answer: Option C. -> 61
Question 608. Is the number below the element symbol on the periodic table the mass number?
  1.    Yes!
  2.    NO!!
 Discuss Question
Answer: Option B. -> NO!!
Question 609. What is the mass number of a nickel atom with 28 protons, 31 neutrons, and 28 electrons?
  1.    31
  2.    28
  3.    59
  4.    87
 Discuss Question
Answer: Option C. -> 59
Question 610. What is the atomic number of a chlorine atom with a mass of 35 amu?
  1.    17
  2.    35
  3.    18
  4.    52
 Discuss Question
Answer: Option A. -> 17

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