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Subjects
Science State Board
Class 7
Changes around us
Textbook questions

7. Classify the following changes as physical and chemical changes

Exercise condition:

6 m.

Physical changes:

Occurrence of a day and night
Rotation of the earth
Rusting of a iron
Formation of eclipses
A rough piece of wood is sanded and polished resulting in change in texture.
Eruption of volcano
Rolling a chapathi dough into thin wire
Occurrence of a thunderstorm
Burning of matchstick
Painting the grill
Bending a paper clip
Blinking of eyelids
Dosa from the batter
Pounding silver into thin plate

Chemical changes:

Rusting of a iron
Eruption of volcano
Occurrence of a thunderstorm
Occurrence of a day and night
Pounding silver into thin plate
Dosa from the batter
A rough piece of wood is sanded and polished resulting in change in texture.
Burning of matchstick
Rolling a chapathi dough into thin wire
Rotation of the earth
Blinking of eyelids
Formation of eclipses
Painting the grill
Bending a paper clip

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