B. Short Answer Questions,
1. Why are the three states of matter different from each other?
Answers
Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around. Liquid matter is made of more loosely packed particles.
Explanation:
Solid : in solid form molecules are very tightly packed that there is very less intermolecular space and there is high
Intermolecular force of attraction. The molecules do not move about their mean position and thus solids have a definite shape and volume.
Liquid : in the liquid form molecules are less tightly packed as compared to solids and also there is less force of intermolecular attraction. They do not have a definite shape but acquire the shape of the vessel in which they are contained but a definite volume at a given temperature
Gases: in the gases form molecules are far apart from each other, that is have the greatest intermolecular distance which result into the weakest intermolecular force of attraction. They do not have a definite shape and also do not have any definite volume.