Classify the following as reversible or irreversible changes (in tabular form):
Ripening of a fruit, burning of dry leaves, cooling of the air, melting of ice cream, baking a cake, dissolving sugar in water, blooming of flowers, development of a baby into an old man, bursting of a cracker.
Important Questions on Changes Around Us
Bring out the important differences between :
Physical change and chemical change -
Bring out the important differences between :
Reversible change and irreversible change.
On a cold day, Harish tried to open the metallic cup of an ink bottle. His mother told him to pour hot water on it. He poured hot water on the cap for a minute. Now the metallic cup opened easily. He was surprised and asked this observation of his elder brother Ritesh. Being a student of science Ritesh explained such things properly.
Answer the following based on the above information.
What are the values displayed by Ritesh?
On a cold day, Harish tried to open the metallic cup of an ink bottle. His mother told him to pour hot water on it. He poured hot water on the cap for a minute. Now the metallic cup opened easily. He surprised and asked this observation to his elder brother Ritesh. Being a student of science Ritesh explained such things properly.
Answer the following based on the above information.
Why it is easy to open metallic cap when warmed with water?
