Litmus is a water-soluble mixture of different dyes. It is often absorbed onto filter paper to produce one of the oldest forms of pH indicator, used to test materials for acidity. Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic (i.e. alkaline) conditions, with the color change occurring over the pH range 4.5 - 8.3. Neutral litmus paper is purple in color. Litmus can also be prepared as an aqueous solution that functions similarly. Under acidic conditions the solution is red, and under basic conditions the solution is blue. So the litmus paper turning blue or red is a "Chemical Change".
Any color, or even lack of color, is a physical property.
Mixing 2 substances together and getting a cange in color may be evidence of a chemical change, but just looking a one substance and describing its color is a physical property.
It is a chemical change because it is a change of color.
And because is a difference between formulas: CoCl2 is blue and CoCl2.2H2O is purple.
Paper is a substance, not a change: so the answer is none of both.
It is a physical change because it is still paper.
Physical change
Physical.
no its chemical. physical changes is where the object chemical matter is not altered. ex- cuting a piece of paper is physical because you still have a piece of paper but burning the paper is chemical because a chemical change has taken place.
its chemical change
A chemical change. Physical changes can be undone. You cannot unburn paper.
making paper from wood is a what change
ANSWER:Its a physical change. If you burned it and it became ash, its a chemical change. Physical change means it made no change on a molecular level. Its still paper, just in two separate pieces.It is a physical change, as the chemical property of the paper remains unchanged.
Tearing paper represents a physical and not a chemical change. Chemical bonds are not broken in this instance, but paper is physically separated (by force) from other paper.
It is a physical change because it is still a sheet of paper.
Physical change
Physical.
It is a physical change as the paper is still paper after you fold it.
It is a physical change as the paper is still paper after you fold it.
It is a physical change.
Physical change. The paper is still a piece of paper; nothing happened to the chemical composition of it.
physical change physical change
no its chemical. physical changes is where the object chemical matter is not altered. ex- cuting a piece of paper is physical because you still have a piece of paper but burning the paper is chemical because a chemical change has taken place.
chemical
chemical