WorksheetsDevelopment of the atom
Total questions: 11
Worksheet time: 8mins
Name
Class
Date
1.
Which Greek Philosopher believed that matter is composed of tiny particles called atoms?
a)
Democritus
b)
Aristotle
c)
Phytagoras
d)
Plato
2.
What is the charge of the nucleus?
a)
+
b)
-
c)
0
3.
The Gold Foil Method through scattering of alpha particles was used to discover what part of the atom?
a)
protons
b)
electrons
c)
neutrons
d)
nucleus
4.
This particle is found in the nucleus and has no charge
a)
Neutron
b)
Proton
c)
Electron
5.
This particle is found in the nucleus and has a positive charge
a)
Electron
b)
Proton
c)
Neutron
6.
What scientist is best known for his "Plum Pudding" model of the atom?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
7.
Place the following scientists in order, from earliest to latest:
A) Ernest Rutherford
B) J.J. Thomson
C) John Dalton
A) Ernest Rutherford
B) J.J. Thomson
C) John Dalton
a)
B,C,A
b)
C,A,B
c)
A,C,B
d)
C,B,A
8.
Which statement is true according to current thinking?
a)
An atom is mostly empty space.
b)
An atom is a collection of particles, so tightly packed that there is little empty space.
c)
The atomic nucleus is very mobile, and moves around inside a cloud of electrons.
d)
The size of atoms changes over time, pulsating from large to small to large again.
9.
What particle was used in the gold foil experiment?
a)
Beta Particle
b)
Alpha particle
c)
Gamma ray
10.
Most of the alpha particles went straight through the gold foil. This suggested that....
a)
There is no interference between alpha and gold.
b)
Most of the atom is made up of empty space.
c)
The alpha particles were very tiny.
d)
None of the above
11.
Some of the alpha particles fired at the gold foil were deflected at angles. This was due to...
a)
reflection of the alpha source when it it the fluorescent screen.
b)
The alpha particles hitting the gold nucleus.
c)
Repulsion forces between the positively charged nucleus and the positively charged alpha particles.
d)
A mis-firing of the alpha source
100 %
