The anthocyanin petunin changes from reddish-purple in an acidic solution to violet in a basic solution.
http://fpedagog.org/PetuniaFlowers/petunia-flowers-as-indicators
You can buy methyl orange indicator from chemical supply companies, online chemical retailers, or laboratory equipment suppliers. It is available in liquid form or as indicator paper/strips for convenient use. Make sure to follow safety guidelines when handling this chemical.
no
Petunia axillaris (the large white or night-scented petunia) or Petunia integrifolia P. axillaris
The indicator's reaction in acids and bases is a chemical change because it involves a change in the chemical structure of the indicator molecule due to its interaction with the ions present in the acid or base solution. This results in a change in color, which is a visible manifestation of the chemical reaction taking place.
Chemical indicator dye is a substance that changes color in the presence of a specific chemical or changes in pH. It is commonly used in laboratories to visually indicate the presence or absence of certain substances in a solution.
to indicate what the chemical is.
Litmus
Yes, the indicator react with the solution.
indicator
A colour change in a chemical indicator implies that a distinguishable chemical property has been changed in the given system.
A change in mass can be an indicator of a chemical reaction if there is a conversion of reactants into products with different mass compositions. For example, if gas is released during a reaction or if there is a change in the number of moles of substances present, there may be a noticeable change in mass.
You can buy methyl orange indicator from chemical supply companies, online chemical retailers, or laboratory equipment suppliers. It is available in liquid form or as indicator paper/strips for convenient use. Make sure to follow safety guidelines when handling this chemical.
no
precipitate
The indicator's reaction in acids and bases is a chemical change because it involves a change in the chemical structure of the indicator molecule due to its interaction with the ions present in the acid or base solution. This results in a change in color, which is a visible manifestation of the chemical reaction taking place.
Petunia axillaris (the large white or night-scented petunia) or Petunia integrifolia P. axillaris
No, an indicator's reaction in acids and bases is a physical change. Indicators change color based on the pH of the solution they are in, but the chemical composition of the indicator remains the same.