History of the Atom Quiz

Who first proposed the idea that matter is made up of indivisible particles?

• Democrus

• JJ Thompson

• Ernst Rutherford

• John Dalton

What was John Dalton's contribution to atomic theory?

• He proposed the solid sphere model of atoms.

• He suggested the planetary model of the atom.

• He discovered electrons.

• He introduced the concept of the nucleus.

Which model of the atom did JJ Thompson propose?

• Solid sphere model

• Plum pudding model

• Planetary model

• Nuclear model

What was the key finding from Rutherford's gold foil experiment?

• Atoms are solid spheres.

• Atoms have a dense nucleus.

• Electrons orbit the nucleus in shells.

• Atoms are indivisible.

What did Rutherford's nuclear model suggest about the atom?

• Electrons are embedded in a positive sphere.

• Atoms have a general positive charge field.

• Atoms are made of solid spheres.

• Atoms have a compact nucleus with positive charge.

How did Neil's Bohr improve the atomic model?

• By discovering neutrons.

• By suggesting electrons orbit in shells.

• By introducing the concept of protons.

• By proposing the plum pudding model.

What prevents the atom from collapsing according to Bohr's model?

• The orbiting of electrons in shells.

• The solid sphere structure.

• The presence of neutrons.

• The dense nucleus.

What did Rutherford discover about the nucleus?

• It is a solid sphere.

• It contains protons.

• It is made of electrons.

• It is a cloud of negative charge.

Who provided evidence for the existence of neutrons?

• John Dalton

• JJ Thompson

• James Chadwick

• Neil's Bohr

What is the modern understanding of the atom based on?

• Nuclear model with protons and neutrons

• Indivisible particles

• Plum pudding model

• Solid sphere model