Atomic Structure and Periodic Table Quiz

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Questions and Answers

What is the basic structure of an atom?

  • A nucleus of electrons surrounded by a cloud of protons and neutrons
  • A nucleus of protons and electrons surrounded by a cloud of neutrons
  • A nucleus of protons and neutrons surrounded by a cloud of electrons (correct)
  • A nucleus of neutrons and electrons surrounded by a cloud of protons

What defines the isotope of an element?

  • The number of neutrons (correct)
  • The number of protons
  • The number of positrons
  • The number of electrons

How are chemical elements distinguished from each other?

  • By the number of neutrons in their atoms
  • By the number of positrons in their atoms
  • By the number of electrons in their atoms
  • By the number of protons in their atoms (correct)

Why is it not possible to see atoms with conventional microscopes?

<p>Because they are smaller than the shortest wavelength of visible light (A)</p> Signup and view all the answers

Where is the majority of an atom's mass located?

<p>In the nucleus (D)</p> Signup and view all the answers

What is the basic structure of an atom?

<p>A nucleus of protons and neutrons surrounded by a cloud of electrons (A)</p> Signup and view all the answers

How are chemical elements distinguished from each other?

<p>By the number of protons in their atoms (B)</p> Signup and view all the answers

What defines the isotope of an element?

<p>The number of neutrons (A)</p> Signup and view all the answers

Why is it not possible to see atoms with conventional microscopes?

<p>Atoms are smaller than the shortest wavelength of visible light (B)</p> Signup and view all the answers

Where is the majority of an atom's mass located?

<p>In the nucleus (D)</p> Signup and view all the answers

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