Grade_4I_Science Project.pptx METHODS OF SEPARATION

METHODS OF SEPARATION
MANY MIXTURES USED IN DAILY LIFE HAVE DIFFERENT TYPES OF SOLUBLE AND INSOLUBLE IMPURITIES N THEM. THESE IMPURITIES CAN CAUSE HARM, IF THEY ARE NOT SEPARATED BEFORE USE.

DIFFERENT METHOS OF SEPARATION

EVAPORATION

SEDIMENTATION

DECANTATION

FILTRATION

1. EURO SCHOOL, THANE SCIENCE PROJECT EURO SCHOOL Grade 4 / I 1

2. TOPIC: METHODS OF SEPARATION 2

3. 3 METHODS OF SEPARATION MANY MIXTURES USED IN DAILY LIFE HAVE DIFFERENT TYPES OF SOLUBLE AND INSOLUBLE IMPURITIES N THEM. THESE IMPURITIES CAN CAUSE HARM, IF THEY ARE NOT SEPARATED BEFORE USE . DIFFERENT METHOS OF SEPARATION EVAPORATION SEDIMENTATION DECANTATION FILTRATION

4. 4 EVAPORATION EVAPORATION IS A TECHNIQUE THAT IS USED IN SEPARATING A MIXTURE, USUALLY A SOLUTION AND A SOLUBLE SOLID. IN THIS METHOD, THE SOLUTION IS HEATED UNTIL THE IT EVAPORATES WHERE IT TURNS INTO A GAS AND MOSTLY LEAVES BEHIND THE SOLID RESIDUE.

5. 5 EVAPORATION EXAMPLE WHEN SEAWATER IS ALLOWED TO STAND IN SHALLOW PITS, WATER GETS HEATED BY SUNLIGHT AND SLOWLY TURNS INTO WATER VAPOUR, THROUGH EVAPORATION . IN A FEW DAYS, THE WATER EVAPORATES COMPLETELY LEAVING BEHIND THE SOLID SALTS.

6. 6 SEDIMENTATION SEDIMENTATION IS A PROCESS OF SETTLING DOWN OF THE HEAVIER PARTICLES PRESENT IN A LIQUID MIXTURE . FOR EXAMPLE , IN A MIXTURE OF SAND AND WATER, SAND SETTLES DOWN AT THE BOTTOM. THIS IS SEDIMENTATION.

7. 7 DECANTATION DECANTATION IS THE PROCESS OF SEPARATION OF LIQUID FROM SOLID AND OTHER NON-MIXING LIQUIDS, BY REMOVING THE LIQUID LAYER AT THE TOP FROM THE LAYER OF SOLID OR LIQUID BELOW . THE PROCESS CAN BE CARRIED OUT BY TILTING THE MIXTURE AFTER POURING OUT THE TOP LAYER.

8. 8 FILTRATION IT IS THE PROCESS IN WHICH SOLID PARTICLES IN A LIQUID OR GASEOUS FLUID ARE REMOVED BY THE USE OF A FILTER MEDIUM THAT PERMITS THE FLUID TO PASS THROUGH BUT RETAINS THE SOLID PARTICLES.

9. 9 FILTRATION EXAMPLE THE MOST COMMON EXAMPLE IS MAKING TEA. WHILE PREPARING TEA, A FILTER OR A SIEVE IS USED TO SEPARATE TEA LEAVES FROM THE WATER .

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