Is cutting of vegetables a physical or a chemical change?It is permanent so should be chemical but no chemical reaction is taking place so it must...

The distinction between chemical and physical change is
not based on whether the change is reversible. Bot physical change can be reversible to
varying degree. Stretching of a rubber band as well as a chewing gum, are both physical
change. However stretching of rubber band is easily reversible process, while that of
chewing gum is not. Similarly, Iron is made by reduction of oxides of iron in the form
of iron ores. This is a chemical change. However this iron again turns to iron oxide in
the process of rusting. In contrast it is very difficult to reverse the chemical change
of oxygen and hydrogen combining to form water.

An
essential requirement of any chemical change is that it results in molecular composition
of the substances subject to change. Such change in the molecular composition also
results in at least some change in chemical properties. In a physical change there ins
no change in molecular composition, or in any chemical
properties.

Cutting of a vegetables only changes the shape
of the substances of which the vegetable is made. But the chemical property of the
substance in whole vegetable remains same as the chemical property of the substances in
each of the cut piece of vegetable. Therefor, cutting of vegetable is a physical
change.