in this video we are going to talk about solids, liquids and gases one thing which is common between solid, liquid
and gases are particles. imagine particles as small balls which are
always moving. these particles behave differently in solid, liquid and gases let’s talk about solids first
some examples of solids are ice cubes, an apple and a car what is common in all these solids? the particles
in solids are very close together and are arranged in a regular pattern
they are also held together by strong forces and finally they cannot move from place to
place now we will talk about liquids. some examples
of liquids are juice, milk and water the particles in liquids are not as close
together as in solids. they are arranged in random way and
they are not held as tightly together as in solids, thus enabling it to move freely. lastly we will talk about gases. some examples
of gases are air, oxygen and gases coming out of a car.
the particles in gas are not close together they are arranged in a random way and forces
between the particles are tiny and therefore they can move freely wherever they want so in nutshell, solids like wood are hard
because the particles are arranged in regular pattern.
they are close together and the forces between the particles are very strong. liquids like water can flow because the particles
are arranged randomly . they are not as close as in solids and the
forces between the particles are not as strong as in solids therefore it allows them to flow. finally gases like oxygen can move freely
because the particles are arranged randomly. they are not as close as in solids. they are
very far apart and the forces between the particles are very weak therefore they can
spread freely. thank you for listening. I hope it was useful.