When you burn a piece of wood different changes take place. Analyse the following:-
Predict possible changes and list them all. 

When you burn a piece of wood different changes take place. Analyse the following:-

Are there any physical changes among them? 

When you burn a piece of wood different changes take place. Analyse the following:-

How many forms of energy are released in the change?

When you burn a piece of wood different changes take place. Analyse the following:-

What chemical changes do you notice? Explain briefly why these occur.