All matter in there states: gas, liquid and solid. A molecular level representation of gases, liquid and solid states is shown in figure:
A gas consists of molecules separated wide apart in empty space. The molecules are free to move about throughout the container.
A liquid has molecules touching each other. However, the intermolecular space, permit the movement of molecules throughout the liquid.
A solid has molecules, atoms or ions arranged in a certain order in fixed positions in the crystal lattice. The particles in a solid are not free to move about but vibrate in their fixed positions. Of studies are best understood. We shall consider it first.
GENERAL CHARACTER OF GASES
1. Expansibility
Gas hase limitless expansibility. They expand to fill the entire vessel are placed in.
2. Compressibility
Gases are easily compressed by application of pressure to s movable in the container.
- The volume, V of the gas
- Its pressure, P
- Its temputure, T
- The number of moles, n, of gases in the container.