MATTER
CONCEPT OF MATTER
MATTER
Is anything that occupies space and has weight. Including all common materials around animals.
States of matter
Solid- For example: stones, pen, paper, nails, door, etc.
Liquid- For example: water, juice, alcohol, tea etc.
Gas- For example: oxygen, (O2), nitrogen (N2) etc.
The kinetic nature of matter to explain the existence of matter in the three states solid ,liquid and gas.
Kinetic nature of matter
IN SOLID
Particles are packed tightly together so they are unable to move about very much.Particles of a solid have low kinetic energy .The electrons of each atom are in motion , so the atoms have a small vibration , but they are fixed in position
- Solid have a definite shape .They do not conform to the shape of the container. Also they have definite volume.
IN LIQUID
The particles of substance have more kinetic energy than those in a solid .The liquid particles are not held in a regular arrangement, but are still very close to each other. So liquids have a definite volume -liquid like solid ,can not be compressed .Particles of liquid have just enough room to flow around each other . So liquids have an indefinite shape.
IN GASES
Gas particles have a great deal of space between them and have high kinetic energy .If unconfined, the particles of a gas will spread out indefinitely.If confined, the gas will expand to fill its container.