0
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".
What else can I help you with?
Is coloring on a white piece of paper a physical change or a chemical change?
Coloring on a white piece of paper is a physical change because the color change is reversible and does not alter the chemical composition of the paper. The paper remains paper even after coloring on it.
Is tearing paper chemical or physical?
Tearing paper is a physical change because it does not alter the chemical composition of the paper. The paper still remains paper, just in smaller pieces.
When a piece of paper is torn into two pieces has it undergone a chemical change or a physical 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.
Is ripping up a piece of paper a chemical change?
It is physical because the appearance hasn't changed at all and is the same paper still. For example, if you burned the paper that would be a chemical change because the paper turned into ash and is releasing gas which is a resulting chemical change that has just happened. Hope this helped :) -V
Is origami a physical or chemical change?
Origami is a physical change because it involves the folding and manipulation of paper without altering its chemical composition.
Is tearing a paper a chemical or a physical change?
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.
Is cutting a paper physical or chemical change?
It is a physical change because it is still a sheet of paper.
tearing a piece of paper in half physical or chemical change?
Physical change
Is cutting paper a chemical?
No, cutting paper is a physical change, not a chemical change. The paper's chemical composition remains the same before and after cutting; only its physical shape is altered.
Is folding paper a physical change or a chemical change?
Physical.
Is folding paper physical or chemical change?
It is a physical change as the paper is still paper after you fold it.
Is wadding a sheet of paper a chemical change?
Physical change. The paper is still a piece of paper; nothing happened to the chemical composition of it.
Is folding a physical or chemical change?
It is a physical change as the paper is still paper after you fold it.
Is tearing of paper a physical change or chemical change?
It is a physical change.
Is coloring on a white piece of paper a physical change or a chemical change?
Coloring on a white piece of paper is a physical change because the color change is reversible and does not alter the chemical composition of the paper. The paper remains paper even after coloring on it.
Is recycling paper an example of a physical or chemical change?
physical change physical change
Is buring paper a physical or chemical change?
chemical
