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Almost certainly chemical. Color ... that is, absorption or emission of electromagnetic radiation in the visible band ... is usually due to the electronic structure of the compounds. Changing the electronic structure usually means that a bond has broken or formed, which is a chemical change.
However, certain types of color changes are physical. For example, when you heat a piece of metal and it begins to glow red, then orange, then yellow as you increase the heat, that's a purely physical change. Certain types of colors... like the swirling colors you see in a soap bubble... are produced by physical phenomena, and the changes there are physical (the color depends on the thickness of the soap film). "Mood Rings" are another example of something that exhibits a physical color change.
What else can I help you with?
Is changing color of a carnation a chemical or physical change?
It is a chemical change.
When you dye your hair is that physical change or chemical change?
Yes it is a chemical change because color change is an observed change that a chemical change has occurred. So you are very much right. :)
Is food color is dropped into water to give it color a chemical change?
no, a physical change
Is bending a metal wire a physical or chemical change?
It's a physical change, because bending a wire doesn't affect the chemical makeup of it.
How is a chemical diffrent from a physical change?
Chemical Changes the substance and physical really dont change it as much examples of chemical: burning wood, physical: painting it Physical is basically changing color, looks,
If the color changes it is a chemical or physical?
- Color is a physical property and the change of color also.- Color change may be a sign of a chemical reaction.
Is the Change of color a physical change?
it is a chemical change
Is the eye color physical or chemical change?
Eye color is a physical change, not a chemical change. Eye color is determined by the amount and distribution of melanin in the iris, which is a physical characteristic that can change over time but does not involve any chemical reactions.
Is a color changing in leaves a chemical change or physical change?
Chemical Change.
Is a color changing in leaves a physical or chemical change?
a chemical change
Is changing color of a carnation a chemical or physical change?
It is a chemical change.
Is the change in leaves a chemical or physical change?
The change is leaf color is a chemical change.
What can be used as an indicator for a physical change and a chemical change?
Change in Color.
When you dye your hair is that physical change or chemical change?
Yes it is a chemical change because color change is an observed change that a chemical change has occurred. So you are very much right. :)
Is food color is dropped into water to give it color a chemical change?
no, a physical change
When bleach spills on a shirt is it a chemical change?
Yes, when bleach spills on a shirt and causes the fabric to change color or degrade, it is considered a chemical change. Chemical changes involve a rearrangement of atoms and the formation of new substances.
Is color change a physical or chemical change?
It depends. In most cases, it is a chemical change as the different colored species have different chemical structures. However, it is possible to change color by very finely dividing particles of matter and this is a physical change.
