Respuesta :
A chemical change is the change which is not easily reversed and in which a new substance is formed
Below are some examples of physical changes:
- Burning of bush
- Rusting of iron nails
- Dissolution of metals in acids
What is change of state of matter?
This is a process which involves the changing of state of matter of from one form or state to another.
- When solid change to liquid, it is called melting
- When liquid change to solid, it is called freezing
- When a solid changes directly to gas on heating, it is called sublimation
So therefore, a chemical change is the change which is not easily reversed and in which a new substance is formed
Learn more about chemical changes:
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