Leaving Cert Chemistry Atomic Structure: The following names are omitted

Question

The following names are omitted from the passage below, which outlines the history of the development of our knowledge about atoms.

Thomson
Rutherford
Dalton
Mosley
Bohr

Write in your answer book the name corresponding to each number, 1 to 5.

In ancient Greece, Leucippus and his pupil, Democritus, said that matter is made up of atoms. About two centuries ago 1 __________ described atoms as tiny, indivisible particles. Almost a century later, 2 __________ discovered the electron. A few years after that 3 __________ carried out the experiment, involving the scattering of alpha particles by gold foil, that resulted in the discovery of the nucleus. Later 4 __________ developed a theory restricting electrons in atoms to energy levels. In the early 1900s 5 __________ discovered that the atoms of each element have a characteristic positive nuclear charge now called the atomic number.

The following names are omitted from the passage below, which outlines the history of the development of our knowledge about atoms - Leaving Cert Chemistry - Question a - 2013

Worked Solution & Example Answer:The following names are omitted from the passage below, which outlines the history of the development of our knowledge about atoms - Leaving Cert Chemistry - Question a - 2013

1. __________

2. __________

3. __________

4. __________

5. __________

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