physical and chemical change

Separate the following into physical and chemical changes : Sublimation of a solid , decomposition of water into hydrogen and oxygen by passing electric current , sublimation of a solid , decomposition of water .

Classify the following as physical or chemical changes :

Classify the changes involved In the following processes as physical or chemical changes : Digestion of food

Classify the changes involved in the following processes as physical or chemical changes: Digestion of food

Classify the changes involved in the following processes as physical or chemical changes: Melting of wax

Classify the changes involved In the following processes as physical or chemical changes : Burning of Coal

Classify the changes involved In the following processes as physical or chemical changes : Melting of wax