When a woolen yarn is knitted to get a sweater, the change can be classified as _____ .

Match the following:

Classify the following changes as physical and chemical changes:

A rough piece of wood is sanded and polished resulting in change in texture, Rusting of an iron nail, Painting the grill, Bending a paper clip, Pounding silver into thin plate, Rolling the chappathi dough into thin wire, Occurrence of day and night, eruption of volcano, burning of matchstick, dosa from the batter, blinking of eyelids, occurrence of a thunderstorm, rotation of the earth, formation of eclipses.