Chapter 3 - Matter
Key points Checklist
Matter
Particle model of matter and sub-atomic model of matter
Physical means: pure substance and mixture
Chemical means: element, compound
everything present on this earth is known as a matter which can be defined as
anything which occupies mass and space is called “matter 物物”. the matter is consists
of three fundamental states i.e., solid, liquid, and gas.
In biology, Cells are the basic building blocks of all living things. The human body
is composed of trillions of cells. Similarly, particles or atoms are the basic building
blocks of all matter existed in the world. We want through studying the properties of
particles of a matter to understand the characteristics of matter itself.
Macro – view (matter) Iron bar
Micro – view (study the smallest building block of an iron
bar)
Particle model of matter (atom)
Sub-atomic model of matter (electron)
Iron atom
