can all changes will be reversed list four changes that can be reversed and cannot be reversed
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There are two types of changes
1) Physical changes 2) Chemical changes
Physical changes can be reverse by ordinary method easily but chemical changes need some chemical reaction to reverse them.
Some physical changes
1) vaporization of water.
2) freezing of water.
3) Dissolving of salt in water.
4) Dissolving of sugar in water.
Some chemical changes
1) Reaction of Hydrogen with Oxygen to form water.
2) Rusting of iron.
3) Formation of salt from Sodium and chlorine.
4) Formation of yogurt from milk.
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