Its chemical properties does not change.
A change in phase is a physical process.
yes
a physical change happens when something is changed physically, for example, snapping a twig or popping a balloon is physical change, but actions like burning wood or cooking an egg are not physical.
it is a physical change
It is a chemical change.
The change in momentum depends on the
No, a liquid changing to a gas is a change of state or a physical change.
electricity will not change the state of matter.
A change in position would be motion. (Motion) is the answer for A+
how can we use the flow of matter or energy in a ayatem to predict a change in that system
It is a physical change because is it changing the leaf? No, no it isn't so it is a physical change.
Matter is nothing just a form of energy. So,either adding or removing energy,we can change the state of a matter. example:- ICE is in solid state, if we apply heat energy, it melts and changes to liquid form. Again if we apply heat energy,that liquid will change to vapour form.