Which scientist proposed the "plum pudding model" of the atom?

Dalton developed the first scientifically tested atomic theory. (T/F)

Chadwick is credited with discovering which part of the atom?

In Rutherford's famous "Gold Foil" experiment, some particles passed through the foil, some were deflected, and some were bounced straight back. This observation made Rutherford conclude

What were J. J. Thomson's major contributions to the atomic theory?

This was the first model of the atom ever proposed. It was simple and described atoms as tiny spheres that could not be broken down into smaller pieces.

Aristotle and other early Greek philosophers thought that matter was composed of four elements: air, earth, fire, and water(T/F)

Who established that "electrons move around the nucleus at fixed distances called orbitals or shells"?

Ernest Rutherford discovered that atoms were mostly _________________.

What scientist is best known for his gold foil experiment?

Who was the first to propose that matter consist of indivisible particle of matter called atoms?

Which scientist is responsible for first stating that all the atoms of a particular element are identical but are different from the atoms of all other elements?