WorksheetsHistory of the Atom
Total questions: 20
Worksheet time: 26mins
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
John Dalton said that all atoms of the same element are _________________.
identical
indestructible
indifferent
ironic
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
What did Niels Bohr discover about electrons?
Electrons orbit the nucleus
Protons circle the nucleus
The nucleus circle the atom
Electrons don't exist
Bohr's model of the atom was called
Plum Pudding
Billiard Ball
Nuclear Model
Planetary Model
What did Erwin Schrodinger do to help with atomic theory?
He developed the Electron Cloud Model.
Made the Bohr Model.
Discovered the Protons.
None of the Above.
James Chadwick discovered the
electron
proton
neutron
alpha particle
What two parts are in the nucleus of the atom?
proton and electron
proton and neutron
neutron and electron
Which part of the atom has the smallest mass?
electron
proton
neutron
nucleus
The proton has a _____________ charge.
negative
positive
neutral
The _____________ has a negative charge.
proton
neutron
nucleus
electron
The neutron has no charge (it's neutral).
True
False
Which one of the following discoveries came first?
electrons
neutrons
quarks
atoms
The smallest particle of an element that still represents that element.
Nucleus
electron
proton
atom
