Moving to the prever changes to this awer Question 2 1.38 points but its A pure substance can exist in more than is one that is uniform and invariable in chemical composition must be the same in Any Substances / mechanical composition / two phase / all phases Pure Substances / chemical composition / three phase / each phase Pure Substances / physical composition / one phase / each phase Any Substances / molecular composition / one phase / all phase Mow the next dans to the Out