Science: Separation of substances Detailed explanation.

2. 1) SEPARATING STONES FROM RICE.
2) SEPARATING TEA FROM TEA LEAVEES.
3) SEPARATING CHAFF FROM THE GRAINS
SEPARATION MEANS REMOVAL
OF
SUBSTANCES FROM A MIXTURE
OF
TWO OR MORE SUBSTANCES

3. TO OBTAIN TWO DIFFERENT, BUT USEFUL
COMPONENTS..
TO REMOVE NON-USEFUL COMPONENTS.
TO REMOVE IMPURITIES OR HARMFUL
COMPONENTS.
TO GROUP SUBSTANCES OF DIFFERENT
SIZES.

4. THRESHING
USED FOR SEPARATING
GRAINS FROM STALKS.
MACHINES CAN ALSO BE
USED FOR THE PROCESS.
WINNOWING
USED TO SEPARATE
HEAVIER AND LIGHTER
COMPONENTS OF A
MIXTURE.

5. HAND-PICKING
USED FOR SEPARATING
LARGE SIZED IMPURITIES
LIKE STONES AND HUSK
FROM RICE, WHEAT,
PULSES.
SIEVING
USED FOR WHEN
COMPONENTS OF A
MIXTURE HAVE
DIFFERENT SIZES.

6. •SEDIMENTATION
LIGHTER
LIQUID
HEAVIER
SUSTANCE

7. •DECANTATION
PURE WATER

8. •FILTRATION
SEPARATION OF SOLIDS FROM LIQUIDS EITHER BY
USING A FILTER PAPER OR STRAINER. FOR
EXAMPLE: SEPARATING TEA FROM TEA LEAVES WE
USE A STRAINER OR SEPARATING MUD FROM
WATER WE USE A FILTER PAPER.

9. •EVAPORATION
EVAPORATION IS USED WHEN WE WANT TO GET A
SUBSTANCE THAT HAS BEEN DISSOLVED.
EXAMPLE: GETTING SALT OUT OF SALTY WATER.
THE SALTY WATER IS PUT INTO A EVAPORATING
BASIN. IT IS LEFT IN A WARM PLACE AND WATER
EVAPORATES LEAVING BEHIND THE SALT
CRYSTALS.

10. •CONDENSATION
CONDENSATION IS THE PROCESS BY WHICH A
SUBSTANCE CHANGES FROM GAS PHASE TO THE
LIQUID PHASE.
WATER VAPOUR CONDENCES INTO
LIQUID WATER AFTER MAKING CONTACT
WITH THE SURFACE OF A COLD BOTTLE.

11. WATER DISSOLVES DIFFERENT
AMOUNT OF SOLUABLE SUBSTANCE
[SUGAR] IN IT.
A SATURATED
SOLUTION IS ONE IN
WHICH NO MORE OF
THAT SUBSTANCE CAN
BE DISSOLVED.