Introduction
Matter and Its Interactions builds understanding of the relationship between energy and matter and
transfer and transformation at the molecular level.

OBJECTIVES :
AFTER COMPLETING THIS TOPIC STUDENTS WILL BE ABLE TO:
- define atoms and sub – atomic particles.
- list the first 20 elements in the periodic table.
- identify and state the atomic and mass number of an element.
- write the electronic configuration of elements.
- discuss how elements combine.