Scientific findings presentatigggon.pptx

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1. Chemistry holiday assignment By n. Sanjana shree Vii c

2. Introduction Changes that occur Examples of change Types of Physical and Chemical change Reversible change irreversible change

3. INTRODUCTION 3

4. REVERSIBLE CHANGE A change which can happen backward, that is, can be reversed is called a reversible change. If you keep water in the freezer for some time, it transforms into ice. But as soon as you take it out of the freezer, it turns into water again. This is a reversible change. 4

5. IRREVERSIBLE CHANGE IRREVERSIBLE CHANGE ARE PERMANENT CHANGES THAT CAN NOT BE UNDONE.IN A REVERSIBLE CHANGE,NEW MATERIALS ARE FORMED,AND THE ORIGINAL SUBSTANCE CANNOT BE RECOVERED.SOME EXAMPLES OF IRREVERSIBLE CHANGE INCLUDE BAKING A CAKE,HEATING A RAW EGG TO COOK IT,BURNING WOOD AND BURNING PAPER. 5

6. CHANGES THAT OCCUR AROUND US

7. Changes that occur around us 7

8. There are two types of change 8

9. Physical change 9

10. Chemical change

11. THANK YOU FOR WATCHING MY PRESENTATION