History of the Atom

Who developed the planetary model of the atom?

• Niels Bohr

• Ernest Rutherford

• John Dalton

• Democritus

Democritus was known for

• discovering the electron

• discovering the proton

• creating the term atom, meaning indivisible

• discovering the nucleus

What did Aristotle say the five main elements were?

• Earth, air, fire, water and aether

• Ice, Water, Steam, clouds And slush

• Dirt, rocks, sand, cement and soil

• Silicon, Gold, Silver, Carbon and hydrogen

John Dalton said that all atoms of the same element are _________________.

• identical

• indestructible

• indifferent

• ironic

Tags

NGSS.MS-PS1-1

What was the name given to John Dalton's atomic model?

• basketball

• billiard ball

• football

• cue ball

JJ Thomson discovered the

• nucleus

• proton

• neutron

• electron

Who created the plum pudding model?

• JJ Thomson

• Ernest Rutherford

• Niels Bohr

• John Dalton

What did Ernest Rutherford fire at the gold foil?

• radioactive particles

• particles

• subatomic particles

• alpha particles

What did Rutherford EXPECT to happen in the gold foil experiment?

• all alpha particles pass through the gold foil

• All alpha particles deflected by gold foil

What did Ernest Rutherford discover about the atom?

• The charge of the electron

• That the atom is a sphere

• The electron

• The proton

Tags

NGSS.HS-PS1-8