Question

Match the scientist to his contribution to the atomic theory. (4 points)

Column A
1.
J. J. Thomson

:
J. J. Thomson

2.
John Dalton

:
John Dalton

3.
Ernest Rutherford

:
Ernest Rutherford

4.
Niels Bohr

:
Niels Bohr

Column B
a.
Electrons are scattered within the atom.

b.
Atoms are the smallest unit of an element.

c.
Electrons are in orbital levels.

d.
Protons are at the center of an atom.

Answer 1

Answer:

1. d) protons are at the centre of an atom

2. b) Atoms are the smallest unit of an element

3. a) Electrons are scattered within the atom

4. c) Electrons are in orbital levels

Answer 2

1. d) protons are at the centre of an atom

2. b) Atoms are the smallest unit of an element

3. a) Electrons are scattered within the atom

4. c) Electrons are in orbital levels