Science Chemistry and Physics Revision

Question 1

Who first suggested the existence of atoms - tiny indivisible particles - as the building blocks of all matter?

Answer 1

Democritus

Question 2

What was the name of the scientist who produced the ‘Plum-Pudding’ model of the atom, after theorizing that atoms were made up of negatively charged electrons suspended in a spherical positive charge?

Answer 2

J.J Thomson

Question 3

What was the name of the scientist who produced the ‘Solid Sphere’ model of the atom, after proving Democritus’ theory that matter was indeed composed of atoms?

Answer 3

John Dalton

Question 4

What was the name of the scientist who produced the ‘Nuclear Model’ of the atom, after discovering the existence of a positively charged nucleus when he fired positively charged alpha particles at a sheet of suspended gold foil?

Answer 4

Ernest Rutherford

Question 5

What was the name of the scientist who produced the ‘Planetary Model’ of the atom, stating that electrons orbited around in the nucleus in energy shells?

Answer 5

Niels Bohr

Question 6

What was the name of the scientist who produced the ‘Quantum Model’ of the atom, stating that electrons orbit the nucleus in orbitals where it is uncertain the exact location of an electron?

Answer 6

Erwin Schrodinger