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WorksheetsAtomic Theory
Total questions: 7
Worksheet time: 4mins
Name
Class
Date
1.
Democritus told us that matter
a)
contains the elements wood, earth, fire and water
b)
is made of particles called atoms
c)
said that matter and energy were linked
d)
said that matter released radiation
2.
Thomson is best remembered for discovering
a)
atoms
b)
the nucleus
c)
neutrons
d)
electrons
3.
Dalton believed that atoms
a)
were indestructible
b)
were charged
c)
contained a nucleus
d)
emitted radiation
4.
Rutherford did his famous gold foil experiment. In his experiment he fired a beam of what at gold foil?
a)
electricity
light
light
b)
alpha particles
c)
beta particles
d)
gamma rays
5.
Rutherford is best remembered for discovering
a)
atoms
b)
the nucleus
c)
neutrons
d)
electrons
6.
Rutherford's experiment showed that the atom is largely
a)
electron shells
b)
a nucleus
c)
empty space
d)
filled with particles
7.
Bohr extended Rutherford's theory by saying
a)
that neutrons were orbiting the nucleus
b)
that electrons orbited the nucleus like the moon orbits the earth
c)
electrons move around the nucleus in elliptical paths
d)
electrons are found in shells but not between the shells
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