This is our first slide in slideshare account. i wish this will heip you for finding new ideas about physical and chemical change in systematic manner.

2. SUBMITTED BY;
SIPRASUBHADARSHINI JENA
ROLL NO-21(SC)
SUBHASHREE BEHERA
ROLL NO-22(SC)

3. OBJECTIVES
After the completion of the class , the student
• States physical and chemical changes.
• Explains physical and chemical changes.
• Differentiates between them.
• Gives the examples of both the changes

4. INTRODUCTION
• What type of changes you know in
your surrounding?
• On the basis of changing identity
how many types of changes are
there?

5. PHYSICAL CHANGE
IN PHYSICAL CHANGE THE SUBSTANCES NEVER
CHANGE THEIR IDENTITY.
IT MAY CHANGE
-ITS PHYSICAL STATE
-TASTE
-SHAPE/SIZE
-POSITION

6. CHANGE IN PHYSICAL STATE
1-Water to vapour
2-Dring of clothes
3-Boiling of milk
4-Melting of butter
5-Melting of ice cream

7. MAKING SOLUTION
1-DISSOLUTION OF SUGAR INTO WATER
2-SALT INTO WATER

8. CHANGE IN SHAPE/SIZE
1-CUTTING OF PAPER/CLOTH
2-BREAKING OF GLASS/PLASTIC/PLATE
3-MAKING PAPER BOAT

9. 4-BREAKING OF PENCIL
5-STRETCHING OF RUBBER
6-DRAWING A WIRE OF IRON
7-HAMMERING OF IRON INTO THIN SHEETS

10. CHANGE IN POSITION
1-LIFTING OF TABLE
2-FILLING A GLASS WITH ORANGE
JUICE

11. GRINDING OF A SUBSTANCE
1-CUMIN TO CUMIN POWDER
2-WHEAT TO FLOOR

12. CHARACTERISTICS OF PHYSICAL
CHANGE
1-NO NEW SUBSTANCES ARE FORMED
2-THESE CHANGES ARE REVERSIBLE/TEMPORARY
IN NATURE.

13. WHICH CHANGE IS THIS?

14. WHICH CHANGE IS THIS?

15. • New substances are formed which are
completely different than the original one.
• Sound may be produced
• Heat and light may be given off or absorbed.
• A new smell may be given off.
• A permanent change in colour may take place.
• It is generally irreversible.

16. PHYSICAL AND CHEMICAL CHANGES

17. COMPARISION
PHYSICAL CHANGE
• New substances are formed
which are completely
different than the original
one.
• These changes are
reversible/temporary in
nature,
CHEMICAL CHANGE
• New substances are formed
which are completely
different than the original
one.
• Sound may be produced
• Heat and light may be given
off or absorbed.
• A new smell may be given
off.
• A permanent change in
colour may take place.
• It is generally irreversible.

18. EVALUATION
1-Which changes are physical changes?
(a)Melting of iron metal
(b)Breaking of glass
(c)Ripening of banana
2-which of the following is not a characteristics of a
physical change?
(a)No new substances are formed
(b)Can be reversed
(c) Permanate change
3-Define chemical change.
4-Differentiate between physical and chemical change.

19. HOME ASSIGNMENT
LIST OUT 10 MORE EXAMPLES OF PHYSICAL
AND CHEMICAL CHANGES.