A History of the Atom: Theories and Models

Who proposed the solid sphere model of the atom?

• J.J. Thomson

• Ernest Rutherford

• John Dalton

• Niels Bohr

Ernest Rutherford's nuclear model was proposed in which year?

• 1803

• 1904

• 1911

• 1926

Niels Bohr modified which scientist's model of the atom?

• John Dalton

• J.J. Thomson

• Ernest Rutherford

• Erwin Schrödinger

Erwin Schrödinger is associated with which model of the atom?

• Solid sphere model

• Plum pudding model

• Nuclear model

• Quantum model

Fill in the blank: John Dalton's theory stated that atoms are ________ and identical for a given element.

• divisible

• indivisible

• visible

• different

J.J. Thomson discovered ________ in atoms, which he called 'corpuscles'.

• protons

• neutrons

• electrons

• quarks

Rutherford's experiment involved firing positively charged ________ particles.

• beta

• gamma

• alpha

• delta

Niels Bohr's model introduced the concept of ________ orbits for electrons.

• random

• elliptical

• fixed

• spiral

Erwin Schrödinger's model is based on the concept of ________ orbitals.

• circular

• elliptical

• probability

• fixed

Which model is still widely accepted as the most accurate model of the atom?

• Solid sphere model

• Plum pudding model

• Nuclear model

• Quantum model