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Atom Scientists

Total questions: 17

Worksheet time: 12mins

Name
Class
Date
1.

Which scientist proposed that the atom looked like the above image?

a)

John Dalton

b)

JJ Thomson

c)

Ernest Rutherford

d)

Niels Bohr

2.

Which model below is Dalton's original idea for the atom?

a)
b)
c)
d)
3.

Which Scientist was the first to propose the idea that atoms are actually mostly empty space?

a)

JJ Thomson

b)

Ernest Rutherford

c)

Niels Bohr

d)

John Dalton

4.

Thomson believed the atom was a smooth, hard marble with a positive charge. And trapped within this marble were negatively charged particles. Which picture below matches this?

a)
b)
c)
d)
5.
Rutherford's gold foil experiment provided evidence that...
a)
negative and positive charges are spread evenly throughout the atom.
b)
alpha particles have a positive charge.
c)
gold is not a dense as previously thought.
d)
there is a dense positively charged nucleus at the center of an atom.
6.
Who stated that electrons move in layers or shells?
a)
Bohr
b)
Chadwick
c)
Rutherford
d)
Dalton
7.
Who discovered the neutron?
a)
Dalton
b)
Chadwick
c)
Thomson
d)
Bohr
8.
Ernest Rutherford discovered that atoms were mostly _________________. 
a)
negatively charged
b)
positively charged
c)
electrons
d)
empty space. 
9.
J.J. Thomson used a cathode ray tube to find what particle in the atom?
a)
Proton
b)
Neutron
c)
Electron
10.
Idea was of an indivisible particle of matter he called "atomos"
a)
John Dalton
b)
Aristotle
c)
Democritus
d)
Plato
11.
Discovered the electron using cathode ray tube
a)
Joseph Thomson
b)
John Dalton
c)
Ernest Rutherford
d)
Robert Millikan
12.
First measured the mass and charge of an electron
a)
Joseph Thomson
b)
Robert Millikan
c)
John Dalton
d)
Niels Bohr
13.
What scientist first developed 4 rules for atomic theory, and helped kick start modern chemistry?
a)
Thomson
b)
Rutherford
c)
Dalton
d)
Democritus
14.

Who developed the law of definite proportions

a)

Antoine Lavoisier

b)

Francis Aston

c)

Michael Faraday

d)

Joseph Proust

15.

Who developed the law of conservation of mass?

a)

Antoine Lavoisier

b)

Francis Aston

c)

Michael Faraday

d)

Joseph Proust

16.

Who used a mass spectrometer to discover isotope abundance?

a)

Antoine Lavoisier

b)

Francis Aston

c)

Michael Faraday

d)

Joseph Proust

17.

Discovered a positive stream of particles that led to the discover of the proton.

a)

Joseph Thomson

b)

John Dalton

c)

Eugen Goldstein

d)

Robert Millikan

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