Atomic Models and History

Front

Who proposed that electrons move around the nucleus in specific paths a fixed distance from the nucleus? Options: Bohr, Rutherford, Chadwick, Thomson

Back

Bohr

Front

This picture best represents ___________________ atomic model. Options: Thomson's, Dalton's, Bohr's, Chadwick's

Back

Thomson's

Front

In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.

Back

Atoms

Front

Conclusions based on Rutherford’s gold foil experiment: Atom is mostly empty space, The nucleus is positively charged, The atom has a small dense nucleus.

Back

All answers are correct

Front

Who used the word "atomos" to describe the uncuttable (indivisible) atom?

Back

Democritus

Front

Who discovered electrons?

Back

J.J. Thompson

Front

Ernest Rutherford discovered that the atom was mostly _________________ and has a _______________ charged nucleus.

Back

empty space, positively

Front

Within Dalton's Atomic Theory, he had proposed...

Back

Atoms were the smallest particles that existed and could not be divisible

Front

Which experiment was performed by J. J. Thomson in 1897?

Back

Cathode Ray Experiment

Front

Which subatomic particle was discovered as a result of the cathode ray experiment? Options: proton, neutron, electron, nucleus

Back

electron