Give examples of slow, fast, reversible, irreversible changes

two slow irreversible changes

what is a fast and slow changes

slow changes are germination of seeds ,growing a baby into a man ,revolution of earth.
fast changes  are breaking of glass,tearing of paper, explosion.
reversible changes are folding of paper,melting of candle,making a dough into small balls.
irreversible changes are burning of paper,burning of candle,growing old 

reversible- slow- drying of clothes
                  fast- burning o wax
irreversible- slow- growth of living beings
                    fast - flying of comets

same as chandkaya

Slow change-formation of crystal
Fast change-burning of matchstick
Reversible change-melting of ice
Irreversible change-growth of plant

Slow -

the example of slow isa ant , the example of fast is vehicle , the example of reversible is cutting of trees ,and the example of Irreversible changes is cooking of food.

Reversible- melting of ice
Irreversible- making chappati

Tortoise

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Nahi ata

Yes salt and sugar can dissolve in water

reverrsible - melting of ice-cream 
irreverrsible-burning of paper
 

hiiiiiiiiiiiiiii

Slow change-complete a week
Fast change-bursting of cracker
Reversible change-stretching a rubber band
Irreversible change-burning of wood

Slow- Germination of seeds.
Fast- Speed of light.
Reversible- Tearing of paper.
Irreversible-Burning of paper.
 

Example of slow changes are rusting of iron. Iron+ moust air + oxygen = rust.

Example of fast changes are matchstick catches fire immediately when rubbed against rough surface.

Example of reversible changes are water on cooling changes to ice. Ice on heating changes to water.

Example of irreversible changes are wheat changes to flour and rice grains changes to rice.


Reversible changes are temporary
Irreversible changes are permanent

Slow-Snail
Fast-Rabbit
Reversible-Sharpening the pencil
Non reversible-eating food

Lat us think before it is too

Slow- weathering of rocks
Fast- melting of ice
Reversible- melting of ice
Irriversible- burning of paper

Slow change
1. Growth of human beings and plant
2. Changing milks into curd
Fast change
1. Burning of cooking gas
2. Explosion of crackers
Reversible change
1. Drying of wet clothes
2. Moulding of clay
Irreversible change
1.Digesting food
2. Cooking an egg