Subatomic Particles and Their Properties

The video tutorial explores the structure of the atom, focusing on the discovery and characteristics of subatomic particles: electrons, protons, and neutrons. It begins with an introduction to atomic structure, followed by detailed explanations of JJ Thompson's cathode ray experiment, which led to the discovery of electrons, and E. Goldstein's work on canal rays, which identified protons. The tutorial also covers James Chadwick's discovery of neutrons and concludes with a comparison of the three subatomic particles, highlighting their mass, charge, and location within the atom.

What are the three main subatomic particles discussed in the introduction?

• Atoms, Molecules, Compounds

• Quarks, Leptons, Bosons

• Ions, Isotopes, Elements

• Electrons, Protons, Neutrons

Who discovered the electron and through which experiment?

• James Chadwick, Neutron Experiment

• Niels Bohr, Hydrogen Spectrum Experiment

• JJ Thompson, Cathode Ray Experiment

• Ernest Rutherford, Gold Foil Experiment

What is the relative mass of an electron compared to a hydrogen atom?

• 0 U

• 1/1840 U

• 1 U

• 1840 U

What is the charge of an electron?

• +2

• -1

• 0

• +1

What is the nature of canal rays and what subatomic particle do they represent?

• Positively charged, Neutrons

• Neutral, Neutrons

• Positively charged, Protons

• Negatively charged, Electrons

Who is credited with the discovery of the proton?

• Niels Bohr

• E. Goldstein

• Ernest Rutherford

• JJ Thompson

What is the relative mass of a proton?

• 1 U

• 1/1840 U

• 1840 U

• 0 U

Who discovered the neutron and in what year?

• James Chadwick, 1932

• JJ Thompson, 1897

• Ernest Rutherford, 1911

• E. Goldstein, 1886

What is the charge of a neutron?

• +1

• 0

• +2

• -1

Where are protons and neutrons located within an atom?

• Outside the nucleus

• Inside the nucleus

• In the electron cloud

• In the atomic shell