Physical properties _____________.
include combustibility, flammability, and reactivity
all of the above
create new substances
require a chemical reaction to be observed
can be observed without changing the identity of the substance

Question

Physical properties _____________.
	include combustibility, flammability, and reactivity
	all of the above
	create new substances
	require a chemical reaction to be observed
	can be observed without changing the identity of the substance

anonymous · Answer

I would go for the last one, Because Physics, differently from Chemistrt, it is the science that studies the physical changes of matter, which do not change the molecular arrangement, responsible for the identity of the substance itself.