Discovery of the Proton & Neutron Flashcards

All 5 cards in this deck

What is the name given to the small particles of positive charge in the nucleus, each with the same amount of charge?

Protons.

Whose experimental work provided evidence for the existence of neutrons?

James Chadwick.

How long after the nucleus became an accepted idea was the neutron shown to exist?

About 20 years later.

True or false? The neutron was discovered before the proton.

False. The proton (1920) came first; Chadwick's evidence for the neutron came in 1932.

Put in order: discovery of the electron, the nucleus, the proton, the neutron.

Electron (1897), nucleus (1911), proton (1920), neutron (1932).