A pure substance consists of a single type of particle, while mixtures contain more than one substance. A solution is a homogeneous mixture where one or more substances dissolve fully in another substance. Solutions can be liquid, solid, or gas. A suspension is a heterogeneous mixture where particles do not dissolve and remain suspended throughout. Colloids have particles smaller than suspensions but larger than solutions, scattering light through the Tyndall effect.

1. IS MATTER
AROUND US
PURE?????

2. Accordingto a scientist something is pure, it
means that all the constituent particlesof that
substance are the same in their chemicalnature.
A pure substance consists of a single
type of particles.

3. SOME CONSUMABLE
ITEMS

4. Mixtures are constitutedby more thanone kindof pure
form of matter,knownas a substance. Softdrink and soilare not single
substances .Whateverthe source of a substance may be, it will always
have the same characteristic properties. Therefore, we can say thata
mixturecontains more thanone substance.

5. A solutionis a homogeneous mixtureof two or more
substances.
Ex:Lemonade soda water we think of a solutionasa
liquidthatcontainseither a solid,liquidor a gas dissolved
in it. But, we can alsohave solidsolutions(alloys)and
gaseous solutions (air).

6. ALLOYS
Alloys are homogeneous mixtures of metalsand
cannotbe separatedinto their componentsby physical
methods.

7. solution
Solvent
Component present
In larger amount
Ex: water
Solute
Component present
In lesser amount
Ex: sugar

8. • A solution is a homogeneous mixture.
• The particlesof a solution aresmallerthan 1 nm
(10-9 meter) in diameter.So, they cannot be
seen by naked eyes.
• The solute particlescannot be separatedfrom
the mixtureby the processof filtration.
PROPERTIES OF SOLUTIONS

9. At any particulartemperaturea solution that has
dissolved as much solute as it is capableof dissolving, is
said tobe a saturated solution
If the amount of solute containedin a solution is
less than the saturation level, it is calledan unsaturated
solution.

10. SUSPENSION
A suspension is a heterogeneousmixture inwhich the
solute particles donot dissolve but remain suspended
throughoutthe bulkofthe medium.

12. IT IS A HETEROGENOUSMIXTURE OF TWO OR MORE
COMPONENTSHAVING PARTICULAR SIZELESSTHAN
THAT OF SUSPENSIONAND GREATER THANTHAT OF
SOLUTION

13. TYNDALL
EFFECT
COLLOIDAL PARTICLE CAN SCATTERA BEAM OFVISIBLE
LIGHT BECAUSE OF ITS SMALLER SIZE. THIS
PHENOMENON IS KNOWN AS TYNDALL EFFECT

15. DISPERSED
PHASE
DISPERSPER
SING
MEDIUM
TYPE
EXAMPLE
LIQUID GAS AERSOL FOG
SOLID GAS AEROSOL SMOKE
GAS LIQUID FOAM CREAM
LIQUID LIQUID EMULSION MILK
SOLID LIQUID SOL MUD
GAS SOLID FOAM RUBBER
LIQUID SOLID GEL BUTTER
SOLID SOLID SOLID SOL GEMSTONE

16. SEPARATIONOF MIXTUREOF
TWOIMMISCIBLE LIQUIDS

17. SEPERATION USING
SUBLIMATION (MIXTURE OF
NH4Cl AND SALT)

18. CRYSTALLISATION
WHEN ASATURATEDHOT SOLUTION
ALLOWTO COOL WE CANOBSERVE THE
FORMATION OF SOLID. THISISKNOWN AS
CRYSTALLISATION.

19. ELEMENTS
METALS
METALOIDS
NON-
METALS