Atomic Structure: Discovery of Subatomic Particles
12 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What occurs when atoms gain or lose electrons to increase their stability?

  • They lose their reactivity
  • They become charged entities called ions (correct)
  • They form a chemical bond
  • They become neutral
  • What is the primary reason for the unique characteristics of different elements?

  • The different atomic masses of their atoms
  • The different numbers of protons and electrons in their atoms (correct)
  • The number of electrons in their atoms
  • The number of neutrons in their atoms
  • Which scientist's work led to the discovery of subatomic particles?

  • John Dalton
  • J.J. Thomson (correct)
  • Niels Bohr
  • Ernest Rutherford
  • What is the purpose of the vacuum pump in the cathode ray experiment?

    <p>To maintain a partial vacuum</p> Signup and view all the answers

    What is the result of chemical reactions according to Dalton's atomic theory?

    <p>A rearrangement of atoms to form products</p> Signup and view all the answers

    What is the significance of Dalton's atomic theory?

    <p>It explained the Laws of chemical reactions</p> Signup and view all the answers

    What is the main function of electrons in an atom?

    <p>To revolve around the centre of the nucleus</p> Signup and view all the answers

    Who is credited with proposing the first scientific theory of atomic structure?

    <p>John Dalton</p> Signup and view all the answers

    What is the atomic number of an element determined by?

    <p>The total number of protons in its nucleus</p> Signup and view all the answers

    Which of the following is NOT a component of the atomic structure of matter?

    <p>Molecules</p> Signup and view all the answers

    What is the significance of the study of atomic structure?

    <p>It provides a basis for understanding the entire class of chemical reactions and bonds</p> Signup and view all the answers

    What is the characteristic of a neutral atom?

    <p>It has equal numbers of protons and electrons</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser