Question

classify the following processes into physical or changes.
1. Digestion of food
2. cutting of log of wood into pieces.
3. Burning of crackers.​

Answer 1

Answer:

1. Chemical, because we can't get back the complex sugars we digested.
2. Physical change. No chemical processes are involved. It's just cutting it down.
3. Chemical change. Combustion.

Answer 2

Answer:

digestion of food is chemical change

cutting of log of wood into pieces is a physical change

burning of cracker is also a physical change