The History and Models of the Atom

Who is credited with the Ancient Greek theory of atoms?

• Democritus and Leucippus

• Aristotle and Plato

• Epicurus and Zeno

• Socrates and Pythagoras

What did John Dalton propose about atoms in 1803?

• Atoms are waves of energy

• Atoms are indivisible and identical for each element

• Atoms are composed of quarks

• Atoms are made of hooks and loops

What discovery did JJ Thomson make about the atom?

• Atoms are composed of neutrons only

• Atoms are made of quarks

• Atoms are indivisible spheres

• Atoms contain electrons

What was the name of JJ Thomson's atomic model?

• The Plum Pudding Model

• The Quantum Model

• The Hook and Loop Model

• The Vortex Model

What did Ernest Rutherford discover about the atom?

• Atoms are composed of hooks

• Atoms have a dense nucleus

• Atoms are indivisible

• Atoms are made of waves

What problem did Niels Bohr address in Rutherford's atomic model?

• Why electrons do not spiral into the nucleus

• Why atoms have hooks

• Why atoms are indivisible

• Why atoms are made of quarks

What concept did Niels Bohr introduce in his atomic model?

• Vortex structures

• Quarks

• Electron clouds

• Energy levels or shells

What did Erwin Schrödinger propose about electrons?

• Electrons are made of quarks

• Electrons behave as waves

• Electrons are indivisible spheres

• Electrons are hooks and loops

What did James Chadwick discover in 1932?

• The proton

• The quark

• The electron

• The neutron

What is the modern accepted model of the atom based on Schrödinger's work?

• Hook and loop model

• Vortex structure model

• Plum pudding model

• Electron clouds and orbitals