Podcast
Questions and Answers
What was the purpose of using a beam of small positively charged particles (α-particles) in the experiment?
What was the purpose of using a beam of small positively charged particles (α-particles) in the experiment?
- To measure the thickness of the gold foil
- To bombard the atoms in the gold foil
- To test the electrical conductivity of the gold foil
- To observe the scattering of the α-particles by the gold foil (correct)
Why did Rutherford use a special coating of zinc sulphide on the photographic plate?
Why did Rutherford use a special coating of zinc sulphide on the photographic plate?
- To absorb the α-particles before they hit the photographic plate
- To prevent the α-particles from reaching the photographic plate
- To make it easier to see where the α-particles went after hitting the gold foil (correct)
- To create a barrier between the α-particles and the photographic plate
What conclusion did Rutherford draw from the observation that few α-particles bounced back in the direction from which they had come?
What conclusion did Rutherford draw from the observation that few α-particles bounced back in the direction from which they had come?
- Positive charge is concentrated at the center, nucleus
- The nucleus contains all the mass of an atom (correct)
- Most of the space in an atom is empty
- Whenever an α-particle came close to the nucleus, it experienced a large repulsive force
Why did almost all of the particles penetrate the foil either undeflected or with only a slight deflection?
Why did almost all of the particles penetrate the foil either undeflected or with only a slight deflection?
What does the scattering of α-particles at a large angle suggest about the structure of an atom?
What does the scattering of α-particles at a large angle suggest about the structure of an atom?
Why did Rutherford conclude that whenever an α-particle came close to the nucleus, it experienced a large repulsive force and therefore a large deflection?
Why did Rutherford conclude that whenever an α-particle came close to the nucleus, it experienced a large repulsive force and therefore a large deflection?
According to Rutherford's atomic model, what is the nucleus of an atom primarily composed of?
According to Rutherford's atomic model, what is the nucleus of an atom primarily composed of?
What phenomenon could not be explained by Rutherford's atomic model?
What phenomenon could not be explained by Rutherford's atomic model?
What is the term used to describe a set of colors into which a beam of light can be separated?
What is the term used to describe a set of colors into which a beam of light can be separated?
Which type of spectrum is defined as containing breaks or gaps in terms of the wavelengths included?
Which type of spectrum is defined as containing breaks or gaps in terms of the wavelengths included?
What does the emission of electromagnetic radiations by atoms result in?
What does the emission of electromagnetic radiations by atoms result in?
Why could Rutherford's atomic model not explain the line spectra of hydrogen and its discontinuous spectrum nature?
Why could Rutherford's atomic model not explain the line spectra of hydrogen and its discontinuous spectrum nature?
Why is the nucleus of an atom surrounded by a cloud of negatively charged constituents?
Why is the nucleus of an atom surrounded by a cloud of negatively charged constituents?
What holds together the negatively charged electrons and positively charged protons in an atom according to Rutherford's atomic model?
What holds together the negatively charged electrons and positively charged protons in an atom according to Rutherford's atomic model?
What is defined as a spectrum between a range of wavelengths that contains breaks or gaps?
What is defined as a spectrum between a range of wavelengths that contains breaks or gaps?
What phenomenon could not be explained by Rutherford's atomic model?
What phenomenon could not be explained by Rutherford's atomic model?
Flashcards are hidden until you start studying
