Plum Pudding Model and Its Disproof

The video explores JJ Thompson's discovery of the electron in 1897, detailing his experiments with cathode rays and the challenges he faced. It covers his early life, career, and the significant impact of his work, including the Plum Pudding model. The video concludes with a preview of the next episode on Marie Curie's work.

What was JJ Thompson's initial career aspiration before he became a physicist?

• A book seller

• A locomotive engineer

• A chemist

• A teacher

What was the main reason JJ Thompson applied to be the head of the Cavendish Research Institute?

• He was recommended by a friend

• He applied as a lark

• He was passionate about research

• He wanted to prove a theory

What did William Crooks initially believe about cathode rays?

• They were electromagnetic waves

• They were neutral particles

• They were made of charged particles

• They were a form of light

What was Hinrich Herz's conclusion about cathode rays?

• They were unaffected by electric fields

• They were made of charged particles

• They were a new kind of electromagnetic wave

• They were positively charged

How did JJ Thompson determine the speed of the cathode rays?

• By calculating their mass

• By observing their color

• By using an electromagnetic gauntlet

• By measuring their deflection with a magnet

What was one of the revolutionary conclusions Thompson made about electrons?

• They are unique to each element

• They are the same in all substances

• They are larger than atoms

• They have no charge

What did Thompson's Plum Pudding model suggest about the structure of atoms?

• Electrons orbit the nucleus

• Electrons are embedded in a positive material

• Atoms are mostly empty space

• Atoms are indivisible

What was the main flaw in the Plum Pudding model?

• It didn't account for neutrons

• It couldn't explain atomic spectra

• It was disproven by Rutherford's experiments

• It suggested atoms were unstable

Who was the scientist that inadvertently disproved the Plum Pudding model?

• Niels Bohr

• Albert Einstein

• Marie Curie

• Ernest Rutherford

What significant discovery was made by Marie Curie that related to Thompson's work?

• The proton

• Radium and radiation

• The neutron

• The electron