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The Cathode-Rays Experiment Quiz

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Questions and Answers

Which experiment led to the discovery of the electron?

Rutherford's experiment

Cathode-rays experiment (correct)

Thomson's experiment

Geiger and Marsden's experiment

What is the charge of electrons?

Neutral

It varies

Positive

Negative (correct)

What is the nucleus of an atom?

A space between the orbits of electrons

A complicated structure that resembles the solar system

A small, positively charged center of the atom (correct)

A positively charged particle

What is the conclusion drawn from the cathode rays experiment?

Gases conduct electricity when the pressure is reduced to 0.001 mmHg Signup and view all the answers

What is the difference between isotopes of the same element?

Same atomic numbers and different mass numbers Signup and view all the answers

What is the structure of the atom according to Rutherford's experiment?

The atom has a complicated structure that resembles the solar system Signup and view all the answers

Study Notes

Discovery of the Electron

The cathode rays experiment led to the discovery of the electron.

Properties of Electrons

Electrons have a negative charge.

Atomic Structure

The nucleus is the central part of an atom, containing protons and neutrons.

Cathode Rays Experiment

The cathode rays experiment concluded that cathode rays are composed of tiny, negatively charged particles called electrons, which are emitted from the cathode.

Isotopes

Isotopes of the same element have the same number of protons (atomic number) but differ in the number of neutrons (atomic mass).

Rutherford's Experiment

According to Rutherford's experiment, the atom has a small, dense nucleus at its center, surrounded by electrons orbiting at a distance.

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Description

"Discovering the Electron: The Cathode-Rays Experiment Quiz" - Test your knowledge about the groundbreaking experiment that led to the discovery of the electron. Learn about the behavior of gases under different conditions of pressure and temperature, and how the flow of invisible rays was observed in low-pressure gas tubes. Challenge yourself with questions on the history and science of the cathode-ray experiment, and understand the significance of this discovery in modern physics.