Change of a bud into a flower is a change which cannot be reversed. Give four more such examples.

A potter working on his wheel-shaped a lump of clay into a pot. He then baked the pot in an oven. Do these two acts lead to the same kind of changes or different? Give your opinion and justify your

Which of the following changes cannot be reversed?
(a) Blowing of a balloon
(b) Folding a paper to make a toy aeroplane
(c) Rolling a ball of dough to make roti
(d) Baking cake in an oven
(e) Drying a wet cloth
(f) Making biogas from cow dung
(g) Burning of a candle

A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilised. Can the change in POP be reversed?

You accidently dropped your favourite toy and broke it. This is a change you did not want. Can this change be reversed?

Rusting of iron is an example of

Which one of the steps while burning a candle is not reversible?

Rolling of chapati and baking of chapati are the changes that 

An iron ring is heated. Which of the following statements about it is incorrect?

Which of the following changes cannot be reversed?

The boiling of rice is a physical change.

Bursting of crackers are reversible change.

When ice melts to form water, then a change occurs in its state.

Rubber ball can change the shape if squeezed.

A balloon increases in size when filled with air.

Change in weather takes place due to____________ of the sun.

Heating and cooling any object is a ____________change

Formation of rust on iron nail is a____________ change.

Day and night occur due to ______________of the earth.

Growth of a plant is ___________change.

Formation of clouds is a physical change. Give reasons.

The ash left over by a burning of matchstick. Can you get back matchstick from that ash?

Write the changes that can be noticed in our body easily.

An object expands on heating. Write one use of it

A change occurs during the growth of plants. What type of change it is?

It was Paheli's birthday, her brother Simba was helping her to decorate the house for the birthday party and their parents were also busy making other arrangements. Following were the activities going on at Paheli's home:
(a) Simba blew balloons and put them on the wall.
(b) Some of the balloons got burst.
(c) Paheli cut colourful strips of paper and put them on the wall with the help of tape.
(d) She also made some flowers by origami (paper folding) to decorate the house.
(e) Her father made dough balls.
(f) Mother rolled the dough balls to make puries.
(g) Mother heated oil in a pan.
(h) Father fried the puries in hot oil.
Identify the activities at Paheli's home, as those that can be reversed and those, which cannot be reversed.

Conversion of ice into water and water into ice is an example of change which can be reversed. Give four more examples where you can say that the changes can be reversed.