Models of the Atom

Physics SSS3 First Term

WEEK 3

Models of the Atom

Performance Objectives

Students should be able to;

1. Describe Bohr Rutherford models of atom 
2. Explain nucleon number and their relationship.
3. Identify the radiation from radioactive substances using their characteristics.

Thompson Rutherford model

Content

Modern atomic theory provides a reasonably satisfactory explanation of the properties of matter, the mechanisms of chemical change and the interaction of matter and energy. Such a theory emerged from the synthesis of the work of several scientists, only a few of which will be discussed here.

John Dalton (1766-1844) is generally credited as the father of the atomic theory but the early Greek philosophers were the originators of the concept of atoms. They taught that matter is…