Students will observe: an unchanged paper is a physical change, and a change in the color of the paper represents a chemical change.
(a change in the color of the paper; represents; a chemical change) (Students; will observe; an unchanged paper is a physical change, and a change in the color of the paper represents a chemical change) Context(Students will observe,List([0, 21))):(an unchanged paper; is; a physical change)
Students will observe,List([0, 21))
a change in the color of the paper Students an unchanged paper
represents will observe is
a chemical change
an unchanged paper is a physical change, and a change in the color of the paper represents a chemical change
a physical change