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Questions and Answers
What is the correct explanation for the greenish light in a gas discharge tube?
What is the correct explanation for the greenish light in a gas discharge tube?
- It is caused by the movement of atoms in the gas.
- It is produced when protons strike the glass walls of the discharge tube.
- It is produced when invisible cathode rays strike the glass walls of the discharge tube. (correct)
- It is due to the high electrical voltage applied to the gas in the tube.
How did Thomson explain the formation of cathode rays in the gas discharge tube?
How did Thomson explain the formation of cathode rays in the gas discharge tube?
- By explaining the movement of neutrons within the gas atoms.
- By discussing how positive charges are converted into cathode rays.
- By stating that atoms in the gas contain protons which form cathode rays.
- By describing how electrons are pushed out of gas atoms by high electrical voltage. (correct)
What is the location of electrons within an atom?
What is the location of electrons within an atom?
- Outside the nucleus. (correct)
- Within the atomic orbitals.
- Within the protons and neutrons.
- Inside the nucleus.
How many electrons are present in a hydrogen atom?
How many electrons are present in a hydrogen atom?
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What is the mass of an electron relative to a hydrogen atom?
What is the mass of an electron relative to a hydrogen atom?
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How would you define an electron?
How would you define an electron?
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What was demonstrated by J.J. Thomson in 1997?
What was demonstrated by J.J. Thomson in 1997?
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How did J.J. Thomson show the presence of electrons in an atom?
How did J.J. Thomson show the presence of electrons in an atom?
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Why are the streams of particles given out by the cathode called cathode rays?
Why are the streams of particles given out by the cathode called cathode rays?
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What do cathode rays consist of?
What do cathode rays consist of?
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How did J.J. Thomson determine that all atoms contain negatively charged particles?
How did J.J. Thomson determine that all atoms contain negatively charged particles?
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What did Thomson's experiments reveal about the relationship between electricity and atoms?
What did Thomson's experiments reveal about the relationship between electricity and atoms?
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