Classify these changes into physical and chemical changes. [5 MARKS] S.NoChanges1Melting of Ice2Dissolving sugar in water3Burning rubber4Burning camphor5Melting of wax
Classify these changes into reversible and irreversible. [5 MARKS]
Classify the following as slow or fast changes: [5 MARKS]
S.NoChanges1Growth of a plant2Formation of a cloud3Formation of sugar solution4Inflation of Tyre5Melting of chocolate
Some changes are listed in the following table. For each change, write in the blank column whether the change can be reversed or not.
S. No.
Change
Can be reversed (Yes/No)
1.
Sawing of a piece of wood
-
2.
Melting of ice candy
3.
Dissolving sugar in water
4.
Cooking food
5.
Ripening of a mango
6.
Souring of milk
Classify the following examples into physical or chemical change. [1 MARK] 1) Photosynthesis and burning of coal 2) Dissolving sugar in water and melting of wax