IS MATTER AROUND US PURE - SEPARATING COMPONENTS OF MIXTURE

1. IS MATTER AROUND US
PURE
(SEPRATING THE
COMPONENTS OF A
MIXTURE)
BY: MISS RITIMA
( YOU TUBE CHANNEL : SHORT SHOT BIOLOGY
FOLLOW @ SLIDE SHARE APP- MISS RITIMABIOLOGYEXP)

2. LETS DO A SMALL ACTIVITY

3. LETS TRY TO ANSWER FEW
QUESTIONS
Q1: NAME THE THINGS THAT WE HAVE USED IN
ACTIVITY.
ANS: CANDLE , SPOON , INK AND WATER.
Q2: WHAT WE HAVE DONE IN THIS ACTIVITY?
ANS : WE MIXED INK AND WATER AND THEN
HEATED IT .
Q3: WHICH PHYSICAL PROCESS IS INVOLVED IN
THIS ACTIVITY?
ANS : EVAPORATION

4. SO, EVAPORATION IS THE
PROCESS BY WHICH WE CAN
OBTAIN COLOURED COMPONENT
FROM INK.

5. HOW CAN WE OBTAIN COLOURED
COMPONENT( DYE) FROM BLUE/
BLACK INK?
APPRATUS REQUIRED:
BEAKER , WATCH GLASS, BUNSEN BURNER ,
WIRE GAUZE ,INK.
PROCESS USED FOR SEPARATION:
EVAPORATION

6. BEAKER

7. WATCH GLASS

8. WIRE GAUZE

9. BUNSEN BURNER

10. TRIPOD STAND

11. APPRATUS SET UP
INK IS THE MIXTURE OF DYE IN WATER.
WATER- VOLATILE
INK – NON VOLATILE

12. STEPS
• FILL HALF OF THE BEAKER WITH WATER.
• PUT WATCH GLASS ON THE MOUTH OF THE
BEAKER.
• PUT FEW DROPS OF INK ON THE WATCH
GLASS.
• START HEATING BEAKER. EVAPORATION
TAKES PLACE FROM THE WATCH GLASS.
• STOP HEATING WHEN WATER IS EVAPORATED
AND THIN LAYER OF INK IS LEFT BEHIND.

13. CONCLUSION
• WE FIND THAT INK IS MIXTURE OF DYES IN
WATER. THUS WE CAN SEPARATE THE
VOLATILE COMPONENT( SOLVENT) FROM
NON VOLATILE SOLUTE BY THE METHOD OF
EVAPORATION.

14. THANKS FOR WATCHING