particle model of matter

Question 1

Define the properties of a solid

Answer 1

They have a strong force of attraction. They have a fixed shape , volume and cannot flow, because their particles cannot move from place to place. They can only vibrate in their fixed positions
They cannot be compressed (squashed), because their particles are close together and have no space to move into

Question 2

define properties of a liquid

Answer 2

They flow and take the shape of their container, because their particles can move around each other. They move at random directions at low speed and have a weak force of attraction between the bonds.
they cannot be compressed, because their particles are close together and have no space to move into

Question 3

define the properties of a gas

Answer 3

There are almost no force of attraction between the particles. They flow and completely fill their container, because their particles can move quickly in all directions
can be compressed, because their particles are far apart and have space to move into. More energy compared to liquid and gases. They travel at random directions in high speed. They have no fixed shape and volume

Question 4

name the processes:
From solid to gas
gas to liquid
liquid to gas
liquid to solid
solid to liquid

Answer 4

Processes are :
Sublimation
condensing
boiling or evaporating
freezing
melting

Question 5

The temperature at which a solid converts into a liquid is called

Answer 5

melting point

Question 6

The temperature at which a liquid converts into a gas is called

Answer 6

Boiling point