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WorksheetsFamous Scientist and The Atomic Model
Total questions: 15
Worksheet time: 29mins
Name
Class
Date
1.
The element which was shot with alpha particles, in the famous "thin foil" experiment.
a)
Silver
b)
Gold
c)
Carbon
d)
Copper
2.
First developed the understanding that atoms were where spherical objects which could not longer be "cut" into smaller pieces.
a)
Aristotle
b)
Democritus
c)
Robert Millikan
d)
Ernest Rutherford
3.
The model which was proposed by J.J. Thompson was_____________.
a)
Orbital Atom Model
b)
Planetary Atom Model
c)
Plum Pudding model
d)
None of the above
4.
Proposed that the atom had a dense positively charge center which was extremely small but consisted of mostly empty space.
a)
Ernest Rutherford
b)
J.J Thomson
c)
Robert Millikan
d)
John Dalton
5.
During the thin foil experiment, it was seen that a______of alpha particles passed through the thin foil because the atom__________.
a)
majority; was dense
b)
few; was mostly empty space
c)
majority; was mostly empty space
d)
few; was dense
6.
The photo demonstrates the__________experiment which was conducted by__________.
a)
oil drop; Ernest Rutherford
b)
atomizing; J.J Thomson
c)
oil drop; Robert Millikan
d)
Crookes Tube; Sir William Crooke
7.
Using a cathode ray tube______was able to determine the charge to mass ratio of electrons and proposed the Plum Pudding Model.
a)
Sir William Crooke
b)
Robert Millikan
c)
J.J Thomson
d)
Ernest Rutherford
8.
______developed better cathode-ray tubes to show that the negative stream(ray) was made of ionized(negatively charged) gas.
a)
Sir William Crookes
b)
Robert Millikan
c)
J.J Thomson
d)
Ernest Rutherford
9.
Put forth the following postules:
1. Matter is made up of atoms that are indivisible and indestructible.
2. All atoms of an element are identical.
3. Atoms of different elements have different weights and different chemical properties.
4. Atoms of different elements combine in simple whole numbers to form compounds.
5. Atoms cannot be created or destroyed. When a compound decomposes, the atoms are recovered unchanged.
1. Matter is made up of atoms that are indivisible and indestructible.
2. All atoms of an element are identical.
3. Atoms of different elements have different weights and different chemical properties.
4. Atoms of different elements combine in simple whole numbers to form compounds.
5. Atoms cannot be created or destroyed. When a compound decomposes, the atoms are recovered unchanged.
a)
Sir William Crookes
b)
Ernest Rutherford
c)
John Dalton
d)
J.J Thomspon
10.
Alpha particles have an overall charge of_________.
a)
1+
b)
2+
c)
1-
d)
2-
11.
Alpha particles will be_________ the nucleus because the nucleus is_________.
a)
repelled by; negatively charged
b)
attracted to; negatively charged
c)
repelled by; positively charged
d)
attracted to; negatively charged
12.
When describing his experiment _________ said, “It was almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back to hit you.”
a)
J.J Thomson
b)
Robert Millikan
c)
Ernest Rutherfod
d)
John Dalton
13.
_______believed that everything was made up of fire, air, water and earth.
a)
Democritus
b)
Aristotle
c)
John Dalton
d)
Ernest Rutherford
14.
If the thin foil experiment had been done with heavier elements, the results would have indicated__________
a)
greater deflection angles
b)
greater collisions
c)
greater deflections and angles
d)
greater particles going through
15.
The thin foil experiment proved that_____________
a)
the atom was mostly empty space
b)
the nucleaus is extremely dense and positively charged
c)
neutrons have no charge
d)
the nucleus is extremely dense, positively charged and that the atom is mostly empty space.
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