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It can be, but does not have to be.
- Some chemicals called dyes will reversibly change color in different chemical environments (indicator dyes) others will permanently change color when chemically modified.
- Other chemicals called pigments cannot be changed in color chemically. However they are often mixed physically to produce different colors. For example paints are typically colored by blending different pigments to match color.
- Bleaching is a chemical change of color. It can be triggered by chemicals (e.g. bleaches), by light exposure, etc.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoThe double displacement reaction between copper sulphate (blue initially) and iron rod kept in it , changes the colour of solution to green (formation of ferrous sulphate).. you have so many other reactions like treating a copper salt with K4[Fe(CN)6] (potassium ferro cyanide) compound changes the salts colour to chocolate brown..
Wiki User
∙ 13y agomold on bread because you can't get the mold off and it changes the substance
Wiki User
∙ 8y agoThe change of color may be a sign of a chemical reaction.
Wiki User
∙ 11y agodi ko alam
Wiki User
∙ 8y agoYes it is.
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Is a change in mass an indicator of chemical reaction?
No, it is NOT an indicator of a chemical reaction. Change in color IS an indicator of chemical change, though.
If one substance changes color is it a chemical reaction?
Not necessarily. Things sometimes change colors during a chemical reaction, but a color change is not sufficient evidence of a chemical reaction. You can add drink mix to water and the water turns colors, but it is not a chemical reaction, just a mixture.
What is an indicator of a chemical reaction?
HEAT, Heat is the the number one indication of a reaction. Also, changes of state of matter and mass are also indicators of a chemical reaction. an example is when an iron fence rusts.
How is color a sign of chemical change in food?
When a new color is formed. This is not to be mistaken for a mixture of each of the chemicals that were combined. For example, if a blue substance is combined with a clear substance, and the result is orange, it is a chemical change. However, if the result is just a lighter blue, it does not necessarily indicate chemical change.
Is purple color a physical and chemical change?
The color purple is a physical property, but if it appears during a chemical reaction, it is representative of a chemical change.
What is an example of a color change that does not indicate a chemical reaction?
Many materials can change colour according to the temperature without there being any chemical reaction taking place.
Is a change in mass an indicator of chemical reaction?
No, it is NOT an indicator of a chemical reaction. Change in color IS an indicator of chemical change, though.
Is changing of color a sign of chemical change?
The change of color may be a sign of a chemical reaction.
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 leaves changing color chemical reaction?
Yes it is chemical change.
If one substance changes color is it a chemical reaction?
Not necessarily. Things sometimes change colors during a chemical reaction, but a color change is not sufficient evidence of a chemical reaction. You can add drink mix to water and the water turns colors, but it is not a chemical reaction, just a mixture.
What is an example of color?
An example of color change is when a substance turns a differen color from a reaction.
What should not be used to indicate a chemical reaction?
Change of shape can not be used to indicate a chemical reaction has happened. Examples of evidence of a chemical reaction are changes in odor or color.
How can you know this is a chemical reaction?
Evidence of a chemical reaction include the following: formation of a precipitate formation of a gas change in temperature change in color
Can a chemical reaction cause heat?
Yes, the signs of a chemical reaction are: gas, precipitation, heat, color change
What is a kind of chemical reaction that doesn't have to do with heat?
Change of color.
What is an indicator of a chemical reaction?
HEAT, Heat is the the number one indication of a reaction. Also, changes of state of matter and mass are also indicators of a chemical reaction. an example is when an iron fence rusts.
