Solids, Liquids and GasesSolids, Liquids and GasesMarch 2006 March 2006

By the end of this lesson you will By the end of this lesson you will know: know:

what a ‘material’ iswhat a ‘material’ is what we mean by ‘property’ what we mean by ‘property’ what the properties of solids, liquids and what the properties of solids, liquids and

gases aregases are

Materials Materials

Everything is made from some sort of Everything is made from some sort of ‘material’‘material’

Materials are made up of lots and lots of Materials are made up of lots and lots of tiny pieces tiny pieces

These tiny pieces are known as particlesThese tiny pieces are known as particles Solids, liquids and gases are all made of Solids, liquids and gases are all made of

lots of particles lots of particles

Properties Properties

The property of a material tells us The property of a material tells us something about what it is like…something about what it is like…

Materials may be hard, soft, shiny, roughMaterials may be hard, soft, shiny, rough

Can you think of any more? Can you think of any more?

Solids Solids

A solid is something that we can hold on toA solid is something that we can hold on to A solid keeps its shape, unless we cut it or A solid keeps its shape, unless we cut it or

shape it ourselves shape it ourselves In a solid, all of the particles are packed In a solid, all of the particles are packed

together very tightlytogether very tightly

Liquids Liquids

Liquids are runnyLiquids are runny They can be poured They can be poured The particles are less tightlyThe particles are less tightlypacked, so they can move about packed, so they can move about If poured from one containerIf poured from one containerto another, they will take the to another, they will take the shape of their new containershape of their new container

Gases Gases

The particles in gases have lots of room to The particles in gases have lots of room to move move

Gases are all around us Gases are all around us They spread into all of the empty places They spread into all of the empty places

they can they can Most are invisible Most are invisible

An example – water An example – water

Water can be a solid, a Water can be a solid, a liquid or a gasliquid or a gas

When it is cold it is When it is cold it is solid – ICE solid – ICE

When it is at room When it is at room temperature it is a temperature it is a liquid – WATERliquid – WATER

When it is hot it is a When it is hot it is a gas – STEAM gas – STEAM

Your turn!! Your turn!!

Having learned about the properties of Having learned about the properties of solids, liquids and gases I’ like you make a solids, liquids and gases I’ like you make a list of all of those you know about already list of all of those you know about already