Examples of reverseble or irreversible changes

IRREVERSIBLE CHANGES

1. burning of paper
2. torning a paper
3. breakind a glass
4. rusting of iron
5.cooking of food
6. burning a peice of wood
7. burning of a matchstick
8. falling mango from a tree
9. firing a bullet
10. volcanic eruption
11. cutting of trees
12. making cheese into yougurt
13. making fruits into wine
14. making antibiotics
15. making batter fluffy
16. grilling of food
17. baking of food
18. frying of food
19. preparing pickles
20. toasting bread

REVERSIBLE CHANGES

1. changing of ice into water
2.changing of water into vapour
3. changing of vapour into water
4. changing of vapour into ice
5.changing of ice into vapour
6.process of boiling
7.process of evaporating
8. melting of chocolate
9. melting of butter
10.orange juiceinto ice lollipopes
11. groundwater into vapour
12.solidification of ghee
13.salty water to salt by evaporation
14. stretching of rubber
15. stretching of spring
16. dissolutin of sugar
17. sublimation
18. drying of wet clothes
19. folfing a paper
20 folding clothes
 

 Examples of reversible changes

• Melting: Melting is when solid converts into a liquid after heating. Example of melting is turning of ice into water.
• Freezing: Freezing is when a liquid converts into a solid. Example of freezing is turning of water into ice.
• Boiling: Boiling is when a liquid converts into a gas. Example of boiling is turning water into water vapour.

Examples of irreversible changes

• Burning: When we burn a piece of paper or wood, it turns to ash and smoke. We cannot obtain paper and wood from the ash again.
• Cooking: We use heat for cooking, right? Once we cook our eggs, we cannot uncook them. Therefore, cooking is an irreversible change.
• Rusting of iron: You must have seen rusting of iron. When water vapour (humidity) comes in contact with the iron, they react. Therefore, iron rusts and once this happens, we cannot reverse it.