Revision States of matter

03.31.2020
07:38:35
Hi students, good morning.
Today we will revise about States of matter pg.no : 68 to 71
Important points are :
*there 3 states of matter
1.solid 2.Liquid 3.gas
1.properties of solid:
They are strong and it has fixed shape and volume
2.It cannot flow.the particles are very tightly packed..so.it can only vibrate.
Examples: book,table,chair
* Properties of liquid:
Particles are loosely packed with weaker forces so the particles can move past each other
They have definite or fixed volume but no definite shape.
Examples: water,oil, gasoline
*Properties of gases
Particles are very loosely packed and they are long way apart so they can move freely
Gas doesn't have definite shape and volume
It can be easily squashed
Examples: wind, oxygen,air inside the balloon