This document discusses the properties of materials in different states - solids, liquids, and gases. It defines materials as being made up of tiny particles and properties as describing characteristics like hardness or texture. Solids maintain their shape, liquids flow and take the shape of their container, and gas particles have room to move and spread everywhere. As an example, it describes how water can be a solid (ice), liquid (water), or gas (steam) depending on temperature.

1. Solids, Liquids and GasesSolids, Liquids and Gases

2. By the end of this lesson you willBy 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 andwhat the properties of solids, liquids and
gases aregases are

3. MaterialsMaterials
 Everything is made from some sort ofEverything is made from some sort of
‘material’‘material’
 Materials are made up of lots and lots ofMaterials are made up of lots and lots of
tiny piecestiny pieces
 These tiny pieces are known as particlesThese tiny pieces are known as particles
 Solids, liquids and gases are all made ofSolids, liquids and gases are all made of
lots of particleslots of particles

4. PropertiesProperties
 The property of a material tells usThe 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?

5. SolidsSolids
 A solid is something that we can hold onA solid is something that we can hold on
toto
 A solid keeps its shape, unless we cut it orA solid keeps its shape, unless we cut it or
shape it ourselvesshape it ourselves
 In a solid, all of the particles are packedIn a solid, all of the particles are packed
together very tightlytogether very tightly

6. LiquidsLiquids
 Liquids are runnyLiquids are runny
 They can be pouredThey can be poured
 The particles are less tightlyThe particles are less tightly
packed, so they can move aboutpacked, so they can move about
 If poured from one containerIf poured from one container
to another, they will take theto another, they will take the
shape of their new containershape of their new container

7. GasesGases
 The particles in gases have lots of room toThe particles in gases have lots of room to
movemove
 Gases are all around usGases are all around us
 They spread into all of the empty placesThey spread into all of the empty places
they canthey can
 Most are invisibleMost are invisible

8. An example – waterAn example – water
 Water can be a solid, aWater can be a solid, a
liquid or a gasliquid or a gas
 When it is cold it isWhen it is cold it is
solid – ICEsolid – ICE
 When it is at roomWhen it is at room
temperature it is atemperature it is a
liquid – WATERliquid – WATER
 When it is hot it is aWhen it is hot it is a
gas – STEAMgas – STEAM

9. THANK YOUTHANK YOU
PERSENTED BY :PAWAN MEENAPERSENTED BY :PAWAN MEENA
CLASS: IX th (F)CLASS: IX th (F)

10. THANK YOUTHANK YOU
PERSENTED BY :PAWAN MEENAPERSENTED BY :PAWAN MEENA
CLASS: IX th (F)CLASS: IX th (F)