Explain why burning of wood and cutting it into small pieces are considered as two different types of changes

cbse
cbse-class-7-science
chemical-changes
physcial-and

#1

Explain why burning of wood and cutting it into small pieces are considered as two different types of changes.

Answer:
When wood is burned it forms a completely new substance, i.e., coal. The properties’ of coal are different from wood. This is a chemical change.
Whereas, when wood is cut no new substance is formed. This is a physical change.