Atomic Models

Dalton developed the first scientifically tested atomic theory.

• True

• False

Chadwick found the nucleus through the gold foil experiment.

• True

• False

Aristotle and other early Greek philosophers thought that matter was composed of four elements: air, earth, fire, and water.

• True

• False

Cathode rays contain a negative charge.

• True

• False

Tags

NGSS.HS-PS2-4

Which scientist described a positively charged core (“nucleus”) in the middle of a lot of empty space?

• Chadwick

• Thomson

• Rutherford

• Bohr

Which scientist described an atom made of a solid positively charged substance with electrons dispersed throughout it?

• Chadwick

• Thomson

• Rutherford

• Bohr

Which scientist developed the model of the atom shown?

• Chadwick

• Thomson

• Rutherford

• Bohr

Which scientist developed the model of the atom shown?

• Chadwick

• Thomson

• Rutherford

• Bohr

Which scientist described the existence of the neutron?

• Chadwick

• Thomson

• Rutherford

• Bohr

Which scientist measured the charge on an electron as 1.602 x 10-19 Coulombs?

• Democritus

• Millikan

• Rutherford

• Bohr

Tags

NGSS.HS-PS2-4