Fill in the blank to say whether the change is reversible or irreversible.
Rusting of a nail is
change.
Important Questions on Changes Around Us
Look at the picture given below. Fill in the blank to say whether the change is reversible or irreversible.
Toasting a bread is _____ change.
Identify the following as a physical or a chemical change.
When whisked egg is heated, it scrambles.
Identify the following as physical or chemical change.
When a candle is lit, the wax burns.
Identify the following as physical or chemical change.
When coal is burnt, it turns to ashes.
Identify the following as physical or chemical change.
When jelly cubes are heated, they melt.
Identify the following as physical or chemical change.
When wood comes in contact with water for a long time, it rots.
Identify the following as physical or chemical change.
When chicken is heated, it gets cooked.
Identify the following as physical or chemical change.
When the Sun shines on a puddle of water, the water evaporates.
